[feat] WPF 회원관리 애플리케이션 구현

- .NET 8.0 WPF 프로젝트 생성 - MVVM 패턴 적용 (CommunityToolkit.Mvvm) - 의존성 주입 구현 (Microsoft.Extensions.DependencyInjection) - 로그인/회원관리/회원등록 화면 구현 - 테마 전환 기능 (Dark/Light) - 다국어 지원 (한국어/영어) - 세련된 로그인 UI 디자인 - CLAUDE.md 및 History.md 문서화 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
#2 목표 문서 Docs 삽입
2025-12-29 10:03:49 +09:00 · 2025-12-29 09:07:03 +09:00
78 changed files with 2225 additions and 2245 deletions
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -0,0 +1,60 @@
+# CLAUDE.md
+
+이 파일은 Claude Code (claude.ai/code)가 이 저장소에서 코드 작업을 할 때 참고하는 가이드입니다.
+
+## 프로젝트 개요
+
+EduToy는 WPF(Windows Presentation Foundation) 기초를 학습하기 위한 교육용 프로젝트입니다. "WPF 기초를 위한 토이프로젝트"라는 이름으로도 불립니다.
+
+## 빌드 및 실행
+
+```bash
+# 프로젝트 빌드
+cd src/WPFBeginner
+dotnet build
+
+# 프로젝트 실행
+dotnet run
+```
+
+## 기술 스택
+
+- **.NET 8.0** - Windows WPF 애플리케이션
+- **CommunityToolkit.Mvvm 8.2.2** - MVVM 패턴 구현
+- **Microsoft.Extensions.DependencyInjection 8.0.0** - 의존성 주입
+
+## 프로젝트 아키텍처
+
+```
+src/WPFBeginner/
+├── Models/          # 데이터 모델 (Member, AppSettings)
+├── ViewModels/      # MVVM ViewModel (LoginViewModel, MainViewModel, RegistViewModel)
+├── Views/           # XAML Window (LoginWindow, MainWindow, RegistWindow)
+├── Controls/        # 재사용 가능한 UserControl (InputPanel)
+├── Services/        # 비즈니스 로직 서비스 (SettingsService, MemberService)
+├── Converters/      # WPF 값 변환기
+└── Resources/
+    ├── Themes/      # 테마 ResourceDictionary (DefaultTheme, LightTheme)
+    └── Languages/   # 다국어 리소스 (ko-KR, en-US)
+```
+
+## MVVM 패턴
+
+- **View**: XAML만 사용, 코드 비하인드에 비즈니스 로직 없음
+- **ViewModel**: CommunityToolkit.Mvvm의 `[ObservableProperty]`, `[RelayCommand]` 사용
+- **DI**: App.xaml.cs에서 ServiceCollection으로 서비스 및 ViewModel 등록
+
+## 주요 기능
+
+- **로그인**: appsettings.json의 자격 증명으로 인증 (기본: admin/0000)
+- **회원 관리**: DataGrid로 CRUD 작업
+- **테마 전환**: 어두운 테마(Default) / 밝은 테마(Light)
+- **다국어 지원**: 한국어(ko-KR) / 영어(en-US) 동적 전환
+
+## 설정 파일
+
+`appsettings.json`: 로그인 정보, 언어, 테마, 기본 회원 데이터 저장
+
+## 언어
+
+프로젝트 문서 및 UI는 한국어를 기본으로 사용합니다.
--- a/EduToy.sln
+++ b/EduToy.sln
@@ -0,0 +1,29 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.2.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{827E0CD3-B72D-47B6-A68D-7590B98EB39B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPFBeginner", "src\WPFBeginner\WPFBeginner.csproj", "{20E73DF0-D43D-8913-E28F-6960CD8A512D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{20E73DF0-D43D-8913-E28F-6960CD8A512D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20E73DF0-D43D-8913-E28F-6960CD8A512D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20E73DF0-D43D-8913-E28F-6960CD8A512D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20E73DF0-D43D-8913-E28F-6960CD8A512D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{20E73DF0-D43D-8913-E28F-6960CD8A512D} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9791FF85-3B94-4645-B4A9-22D1B17C40A2}
+	EndGlobalSection
+EndGlobal
--- a/History.md
+++ b/History.md
@@ -0,0 +1,203 @@
+# 프로젝트 개발 히스토리
+
+이 문서는 EduToy WPF 프로젝트의 개발 과정을 기록합니다.
+
+---
+
+## 1. 프로젝트 분석 및 CLAUDE.md 생성
+
+### 요청
+- 코드베이스 분석 및 CLAUDE.md 파일 생성
+
+### 작업 내용
+- 프로젝트 구조 탐색
+- "EduToy" - WPF 교육용 프로젝트로 확인
+- docs/sampleApp/WPFBeginner.exe (컴파일된 바이너리) 발견
+- CLAUDE.md 파일 영문으로 최초 작성
+
+---
+
+## 2. 한국어 전환 및 CLAUDE.md 번역
+
+### 요청
+- 모든 대화를 한글로 진행
+- CLAUDE.md를 한글로 번역
+
+### 작업 내용
+- CLAUDE.md 한국어로 번역 완료
+- 프로젝트 문서화 한국어 기준으로 변경
+
+---
+
+## 3. WPF 애플리케이션 구현
+
+### 요청
+- PowerPoint 파일 (WPF 기초를 위한 토이프로젝트.pptx) 분석
+- sampleApp 참고하여 프로그램 구현
+
+### 기술 스택
+- **.NET 8.0** Windows WPF
+- **CommunityToolkit.Mvvm 8.2.2** - MVVM 패턴
+- **Microsoft.Extensions.DependencyInjection 8.0.0** - DI
+
+### 구현된 구조
+```
+src/WPFBeginner/
+├── Models/
+│   ├── Member.cs
+│   └── AppSettings.cs
+├── ViewModels/
+│   ├── LoginViewModel.cs
+│   ├── MainViewModel.cs
+│   └── RegistViewModel.cs
+├── Views/
+│   ├── LoginWindow.xaml / .cs
+│   ├── MainWindow.xaml / .cs
+│   └── RegistWindow.xaml / .cs
+├── Controls/
+│   └── InputPanel.xaml / .cs
+├── Services/
+│   ├── SettingsService.cs
+│   └── MemberService.cs
+├── Converters/
+│   └── BoolToVisibilityConverter.cs
+└── Resources/
+    ├── Themes/
+    │   ├── DefaultTheme.xaml
+    │   └── LightTheme.xaml
+    └── Languages/
+        ├── ko-KR.xaml
+        └── en-US.xaml
+```
+
+### 주요 기능
+- 로그인 (appsettings.json 자격 증명)
+- 회원 관리 (DataGrid CRUD)
+- 테마 전환 (Dark/Light)
+- 다국어 지원 (한국어/영어)
+
+---
+
+## 4. 검색 영역 짤림 현상 수정
+
+### 요청
+- 창 크기 줄였을 때 검색 영역이 짤리는 현상 수정
+- 엔터키로 검색 가능하도록 기능 개선
+
+### 해결 방법
+- MinWidth="700" MinHeight="400" 설정
+- SearchTextBox_KeyDown 이벤트 핸들러 추가
+
+### 수정 파일
+- `MainWindow.xaml` - MinWidth/MinHeight 추가
+- `MainWindow.xaml.cs` - KeyDown 이벤트 처리
+```csharp
+private void SearchTextBox_KeyDown(object sender, KeyEventArgs e)
+{
+    if (e.Key == Key.Enter && DataContext is MainViewModel viewModel)
+    {
+        viewModel.SearchCommand.Execute(null);
+    }
+}
+```
+
+---
+
+## 5. 로그인 화면 디자인 개선
+
+### 요청
+- 가로 스크롤 디자인 개선
+- 로그인 화면을 세련되게 변경
+
+### 적용된 디자인
+- 그라데이션 배경 (#1a1a2e → #16213e)
+- 둥근 모서리 (CornerRadius="12")
+- 그림자 효과 (DropShadowEffect)
+- 로고 아이콘 (원형 그라데이션)
+- 모던한 입력 필드 스타일
+- 그라데이션 로그인 버튼
+
+### 수정 파일
+- `LoginWindow.xaml` - 전체 디자인 재구성
+
+---
+
+## 6. 로그인 화면 짤림 현상 수정
+
+### 요청
+- 로그인 화면 위아래 짤림 현상 수정
+
+### 해결 방법
+- 외부 Border에 Margin="15" 추가
+- 창 크기 500x420 → 540x440으로 확대
+
+### 수정 파일
+- `LoginWindow.xaml`
+```xml
+<Window Height="540" Width="440">
+    <Border Margin="15" CornerRadius="12">
+        <Border.Effect>
+            <DropShadowEffect BlurRadius="15" ShadowDepth="0" Opacity="0.5"/>
+        </Border.Effect>
+        ...
+    </Border>
+</Window>
+```
+
+---
+
+## 7. 테마 버튼 동작 수정
+
+### 요청
+- 테마 버튼이 동작하지 않는 문제 수정
+- 로그인 화면 제외 이전 디자인 유지
+
+### 문제 원인
+- MainWindow.xaml에 하드코딩된 색상 사용
+- DynamicResource 대신 직접 색상값 (#1a1a2e 등) 사용
+
+### 해결 방법
+- MainWindow.xaml을 DynamicResource 사용하도록 복원
+- LoginWindow.xaml은 새 디자인 유지 (하드코딩)
+
+### 수정 파일
+- `MainWindow.xaml`
+```xml
+<Window Background="{DynamicResource WindowBackgroundBrush}">
+    <Border Background="{DynamicResource SecondaryBrush}">
+        <DataGrid Style="{DynamicResource DefaultDataGridStyle}">
+```
+
+### 테마 전환 구조
+1. **MainWindow.xaml** - 라디오 버튼 Command 바인딩
+2. **MainViewModel.cs** - SetDefaultThemeCommand, SetLightThemeCommand
+3. **SettingsService.cs** - ApplyTheme() 메서드로 ResourceDictionary 교체
+
+---
+
+## 최종 결과
+
+### 완료된 기능
+- ✅ MVVM 패턴 기반 WPF 애플리케이션
+- ✅ 의존성 주입 (DI) 구현
+- ✅ 로그인/회원관리 기능
+- ✅ 테마 전환 (Dark/Light)
+- ✅ 다국어 지원 (한국어/영어)
+- ✅ 세련된 로그인 화면 디자인
+- ✅ 반응형 레이아웃 (MinWidth/MinHeight)
+- ✅ 엔터키 검색 기능
+
+### 빌드 및 실행
+```bash
+cd src/WPFBeginner
+dotnet build
+dotnet run
+```
+
+### 기본 로그인 정보
+- ID: admin
+- Password: 0000
+
+---
+
+*마지막 업데이트: 2025-12-29*
--- a/토이프로젝트.pptx
+++ b/토이프로젝트.pptx
--- a/docs/sampleApp/WPFBeginner.deps.json
+++ b/docs/sampleApp/WPFBeginner.deps.json
@@ -0,0 +1,75 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v8.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v8.0": {
+      "WPFBeginner/1.0.0": {
+        "dependencies": {
+          "CommunityToolkit.Mvvm": "8.2.2",
+          "Microsoft.Extensions.DependencyInjection": "8.0.0"
+        },
+        "runtime": {
+          "WPFBeginner.dll": {}
+        }
+      },
+      "CommunityToolkit.Mvvm/8.2.2": {
+        "runtime": {
+          "lib/net6.0/CommunityToolkit.Mvvm.dll": {
+            "assemblyVersion": "8.2.0.0",
+            "fileVersion": "8.2.2.1"
+          }
+        }
+      },
+      "Microsoft.Extensions.DependencyInjection/8.0.0": {
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "8.0.0"
+        },
+        "runtime": {
+          "lib/net8.0/Microsoft.Extensions.DependencyInjection.dll": {
+            "assemblyVersion": "8.0.0.0",
+            "fileVersion": "8.0.23.53103"
+          }
+        }
+      },
+      "Microsoft.Extensions.DependencyInjection.Abstractions/8.0.0": {
+        "runtime": {
+          "lib/net8.0/Microsoft.Extensions.DependencyInjection.Abstractions.dll": {
+            "assemblyVersion": "8.0.0.0",
+            "fileVersion": "8.0.23.53103"
+          }
+        }
+      }
+    }
+  },
+  "libraries": {
+    "WPFBeginner/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "CommunityToolkit.Mvvm/8.2.2": {
+      "type": "package",
+      "serviceable": true,
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+      "path": "communitytoolkit.mvvm/8.2.2",
+      "hashPath": "communitytoolkit.mvvm.8.2.2.nupkg.sha512"
+    },
+    "Microsoft.Extensions.DependencyInjection/8.0.0": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-V8S3bsm50ig6JSyrbcJJ8bW2b9QLGouz+G1miK3UTaOWmMtFwNNNzUf4AleyDWUmTrWMLNnFSLEQtxmxgNQnNQ==",
+      "path": "microsoft.extensions.dependencyinjection/8.0.0",
+      "hashPath": "microsoft.extensions.dependencyinjection.8.0.0.nupkg.sha512"
+    },
+    "Microsoft.Extensions.DependencyInjection.Abstractions/8.0.0": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-cjWrLkJXK0rs4zofsK4bSdg+jhDLTaxrkXu4gS6Y7MAlCvRyNNgwY/lJi5RDlQOnSZweHqoyvgvbdvQsRIW+hg==",
+      "path": "microsoft.extensions.dependencyinjection.abstractions/8.0.0",
+      "hashPath": "microsoft.extensions.dependencyinjection.abstractions.8.0.0.nupkg.sha512"
+    }
+  }
+}
--- a/docs/sampleApp/WPFBeginner.pdb
+++ b/docs/sampleApp/WPFBeginner.pdb
--- a/docs/sampleApp/WPFBeginner.runtimeconfig.json
+++ b/docs/sampleApp/WPFBeginner.runtimeconfig.json
@@ -0,0 +1,19 @@
+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "8.0.0"
+      },
+      {
+        "name": "Microsoft.WindowsDesktop.App",
+        "version": "8.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.Reflection.Metadata.MetadataUpdater.IsSupported": false,
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": true
+    }
+  }
+}
--- a/docs/sampleApp/appsettings.json
+++ b/docs/sampleApp/appsettings.json
--- a/resource/Buttons.xaml
+++ b/resource/Buttons.xaml
@@ -1,95 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <!--Maximize Button-->
-    <Style x:Key="TiTleBarMaximizeButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
-                        <Path Fill="#FFB8B8B9" Height="14" Width="14" Canvas.Left="-7" Canvas.Top="5">
-                            <Path.Style>
-                                <Style TargetType="Path">
-                                    <Style.Triggers>
-                                        <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Normal">
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-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FF474D51"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FF3D4347"/>
-            </Trigger>
-            <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Normal">
-                <Setter Property="ToolTip" Value="Maximize"/>
-            </DataTrigger>
-            <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Maximized">
-                <Setter Property="ToolTip" Value="Restore"/>
-            </DataTrigger>
-        </Style.Triggers>
-    </Style>
-
-    <!--Minimize Button-->
-    <Style x:Key="TiTleBarMinimizeButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
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-                    </Border>
-                </ControlTemplate>
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-        </Setter>
-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FF474D51"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FF3D4347"/>
-            </Trigger>
-        </Style.Triggers>
-    </Style>
-
-    <!--Close Button-->
-    <Style x:Key="TiTleBarCloseButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
-                        <Path Data="F1M2,2C2,2,2.25,2,2.5,2L2.999,2 3,2 3,2.001 3.221,2.222C3.652,2.653,4.66,3.661,5.847,4.848L6.999,6 8.152,4.848C9.734,3.266,10.999,2,10.999,2L11,2.001 11,2C11,2 12,2 12,2 12,2 12,3 12,3 12,3 10.734,4.266 9.152,5.848L8,7 9.152,8.152C10.734,9.734 12,11 12,11 12,11 12,12 12,12 12,12 11,12 11,12L11,11.999 10.999,12C10.999,12,9.733,10.734,8.151,9.152L6.999,8 5.847,9.152C4.66,10.339,3.652,11.347,3.221,11.778L3,11.999 3,12 2.999,12C3,12 2,12 2,12 2,12 2,11 2,11 2,11 3.265,9.734 4.847,8.152L5.999,7 4.847,5.848C3.265,4.266,1.999,3,1.999,3L2,2.999 2,2.844C2,2.562,2,2,2,2z" 
-					Fill="#FFB8B8B9" Height="13" Canvas.Left="0" Canvas.Top="0" Width="13"/>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FFF06251"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FFED3F2B"/>
-            </Trigger>
-        </Style.Triggers>
-    </Style>
-
-</ResourceDictionary>
--- a/resource/Colors/DefaultTheme.xaml
+++ b/resource/Colors/DefaultTheme.xaml
@@ -1,55 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Background" Color="#FF1E1E1E"/>
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Foreground" Color="LightGreen"/>
-    <SolidColorBrush x:Key="Colors.Section.HorizontalSeperator" Color="Cyan" Opacity="0.8"/>
-    <SolidColorBrush x:Key="Colors.Main.Background" Color="#FF1E1E1E" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Background" Color="#FF383838" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.BorderBrush" Color="#FF424242"  />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Foreground" Color="White"  />
-    <SolidColorBrush x:Key="Colors.TextBox.Background" Color="#FF383838"/>
-    <SolidColorBrush x:Key="Colors.TextBox.Foreground" Color="White"/>
-    <SolidColorBrush x:Key="Colors.TextBox.BorderBrush" Color="#FF424242"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.Normal" Color="White"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MouseOver" Color="Pink"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MousePressed" Color="Coral"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.Normal" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MouseOver" Color="Pink"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MousePressed" Color="Coral"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.Normal" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MouseOver" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MousePressed" Color="#FF1F1F1F"/>
-
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Normal" StartPoint="0,0" EndPoint="0,1">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Normal" Color="White" />
-    <!--<SolidColorBrush x:Key="Colors.DataGridButton.Background.MouseOver" Color="#FFEB530C" Opacity="0.6" />-->
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.MouseOver" StartPoint="0,0" EndPoint="0,1" Opacity="0.6">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.MouseOver" Color="Yellow" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Pressed" StartPoint="0,0" EndPoint="0,1" Opacity="0.8">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-    <!--<SolidColorBrush x:Key="Colors.DataGridButton.Background.Pressed" Color="#FFEB530C" Opacity="0.8" />-->
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Pressed" Color="LightSkyBlue" />
-    
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Normal" Color="#FFB8B8B9"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Pressed" Color="#FFB8B8B9" Opacity="0.6"/>
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MouseOver" Color="#FF474D51"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MousePressed" Color="#FF474D51"/>
-
-</ResourceDictionary>
--- a/resource/Colors/LightTheme.xaml
+++ b/resource/Colors/LightTheme.xaml
@@ -1,52 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Background" Color="#FFF0F0F0"/>
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Foreground" Color="DarkSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.Section.HorizontalSeperator" Color="Gray" Opacity="0.8"/>
-    <SolidColorBrush x:Key="Colors.Main.Background" Color="#FFF0F0F0" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Background" Color="#FFF5F5F5" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.BorderBrush" Color="#FFDDDDDD"  />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Foreground" Color="Black"  />
-    <SolidColorBrush x:Key="Colors.TextBox.Background" Color="#FFF5F5F5"/>
-    <SolidColorBrush x:Key="Colors.TextBox.Foreground" Color="Black"/>
-    <SolidColorBrush x:Key="Colors.TextBox.BorderBrush" Color="#FFDDDDDD"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.Normal" Color="Black"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MouseOver" Color="MediumSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MousePressed" Color="SlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.Normal" Color="#FFEEEEEE"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MouseOver" Color="MediumSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MousePressed" Color="SlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.Normal" Color="#FFEEEEEE"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MouseOver" Color="#FFE0E0E0"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MousePressed" Color="#FFD6D6D6"/>
-
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Normal" StartPoint="0,0" EndPoint="0,1">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Normal" Color="Black" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.MouseOver" StartPoint="0,0" EndPoint="0,1" Opacity="0.6">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.MouseOver" Color="DarkSlateBlue" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Pressed" StartPoint="0,0" EndPoint="0,1" Opacity="0.8">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Pressed" Color="CornflowerBlue" />
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Normal" Color="#FF6E6E70"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Pressed" Color="#FF6E6E70" Opacity="0.6"/>
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MouseOver" Color="#FFD3D3D5"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MousePressed" Color="#FFD3D3D5"/>
-</ResourceDictionary>
--- a/resource/DrawingImages.xaml
+++ b/resource/DrawingImages.xaml
@@ -1,36 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <DrawingImage x:Key="Images.OptionsMenu.Setting.Normal">
-        <DrawingImage.Drawing>
-            <DrawingGroup ClipGeometry="M0,0 V24 H24 V0 H0 Z">
-                <GeometryDrawing Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Normal}" Geometry="F0 M24,24z M0,0z M10.1,1.3L10.1,1.1 12.7,1.1 12.7,1.3 13,2.6 13.2,3.7C14.2,3.9,15.1,4.3,15.9,4.8L16,4.8 17.7,3.5 17.8,3.4 18.1,3.4 18.9,4.2 19.7,5 19.7,5.3 19.6,5.4 19,6.2 18.4,7.1C18.9,7.9,19.3,8.8,19.6,9.8L19.6,9.9 20.5,10 20.7,10 21.7,10.2 21.9,10.2 21.9,12.8 21.7,12.8 20.7,13 19.6,13.2C19.4,14.2,19,15.1,18.5,15.9L19.8,17.6C19.8,17.6,19.8,17.7,19.9,17.7L19.9,18 19.1,18.8 18.3,19.6 18,19.6 17.9,19.5 16,18.4C15.2,18.9,14.2,19.3,13.3,19.5L13.3,19.6 13,21.7 13,21.9 10.4,21.9 10.4,21.7 10.2,20.5 10,19.4C9.1,19.2,8.2,18.8,7.4,18.3L7,18.4 5.3,19.7 5.2,19.8 4.9,19.8 4.1,19 3.3,18.2 3.3,17.9 3.4,17.8 4.2,16.7 4.6,16 4.8,15.7C4.4,15,4,14.2,3.8,13.3L3.4,13.2 1.4,12.9 1.2,12.9 1.2,10.3 1.4,10.3 3.5,9.99999999999999 3.8,9.9C4,8.99999999999999,4.3,8.2,4.8,7.4L4.1,6.4 3.3,5.4 3.2,5.3 3.2,5 4,4.1 4.8,3.3 5.1,3.3 5.2,3.4 7,4.7 7.2,4.9C8,4.3,8.8,3.9,9.8,3.7L10,2.6 10.1,1.3z M13.9,1.3L14.1,2.8C14.7,3,15.3,3.2,15.8,3.5L17,2.6C17.1,2.5 17.4,2.3 17.7,2.2 18,2.1 18.4,2.2 18.8,2.5L19.6,3.3 20.4,4.1C20.7,4.4 20.8,4.8 20.7,5.2 20.6,5.5 20.5,5.7 20.3,5.9L19.5,7C19.8,7.6,20.1,8.2,20.3,8.8L21.7,9C21.9,9 22.2,9.1 22.4,9.2 22.7,9.4 22.9,9.7 22.9,10.2L22.9,12.6C22.9,13.1 22.7,13.4 22.4,13.6 22.2,13.8 21.9,13.8 21.7,13.8L20.3,14C20.1,14.6,19.9,15.2,19.6,15.7L20.4,16.8C20.5,16.9 20.7,17.2 20.8,17.5 20.9,17.8 20.8,18.2 20.5,18.6L19.7,19.4 18.9,20.2C18.6,20.5 18.2,20.6 17.8,20.5 17.5,20.4 17.3,20.3 17.1,20.1L15.9,19.2C15.3,19.5,14.7,19.7,14.1,19.9L13.9,21.4C13.9,21.6 13.8,21.9 13.7,22.1 13.5,22.4 13.2,22.6 12.7,22.6L10.3,22.6C9.8,22.6 9.5,22.4 9.3,22.1 9.1,21.9 9.1,21.6 9.1,21.4L8.9,19.8C8.3,19.6,7.8,19.4,7.2,19.1L5.9,20.1C5.8,20.2 5.5,20.4 5.2,20.5 4.9,20.6 4.5,20.5 4.1,20.2L3.3,19.4 2.5,18.6C2.2,18.3 2.1,17.9 2.2,17.5 2.3,17.2 2.4,17 2.6,16.8L3.6,15.4C3.4,14.9,3.2,14.5,3,14L1.2,14C1,14 0.7,13.9 0.5,13.8 0.2,13.6 0,13.3 0,12.8L0,10.4C0,9.9 0.2,9.6 0.5,9.4 0.8,9.2 1,9.2 1.2,9.2L3,8.9 3.6,7.4 2.5,6C2.4,5.8 2.2,5.6 2.2,5.3 2.1,5 2.2,4.6 2.5,4.2L3.3,3.4 4.1,2.6C4.4,2.3 4.8,2.2 5.2,2.3 5.5,2.4 5.7,2.5 5.9,2.7L7.2,3.7C7.7,3.4,8.2,3.2,8.8,3L9,1.4C9,1.2 9.1,0.9 9.2,0.7 9.5,0.3 9.8,0 10.3,0L12.7,0C13.2,0 13.5,0.2 13.7,0.5 13.8,0.8 13.9,1.1 13.9,1.3z" />
-                <GeometryDrawing>
-                    <GeometryDrawing.Pen>
-                        <Pen Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Normal}" Thickness="1" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter" />
-                    </GeometryDrawing.Pen>
-                    <GeometryDrawing.Geometry>
-                        <EllipseGeometry RadiusX="3.4" RadiusY="3.4" Center="11.5,11.5" />
-                    </GeometryDrawing.Geometry>
-                </GeometryDrawing>
-            </DrawingGroup>
-        </DrawingImage.Drawing>
-    </DrawingImage>
-
-    <DrawingImage x:Key="Images.OptionsMenu.Setting.Pressed">
-        <DrawingImage.Drawing>
-            <DrawingGroup ClipGeometry="M0,0 V24 H24 V0 H0 Z">
-                <GeometryDrawing Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Pressed}" Geometry="F0 M24,24z M0,0z M10.1,1.3L10.1,1.1 12.7,1.1 12.7,1.3 13,2.6 13.2,3.7C14.2,3.9,15.1,4.3,15.9,4.8L16,4.8 17.7,3.5 17.8,3.4 18.1,3.4 18.9,4.2 19.7,5 19.7,5.3 19.6,5.4 19,6.2 18.4,7.1C18.9,7.9,19.3,8.8,19.6,9.8L19.6,9.9 20.5,10 20.7,10 21.7,10.2 21.9,10.2 21.9,12.8 21.7,12.8 20.7,13 19.6,13.2C19.4,14.2,19,15.1,18.5,15.9L19.8,17.6C19.8,17.6,19.8,17.7,19.9,17.7L19.9,18 19.1,18.8 18.3,19.6 18,19.6 17.9,19.5 16,18.4C15.2,18.9,14.2,19.3,13.3,19.5L13.3,19.6 13,21.7 13,21.9 10.4,21.9 10.4,21.7 10.2,20.5 10,19.4C9.1,19.2,8.2,18.8,7.4,18.3L7,18.4 5.3,19.7 5.2,19.8 4.9,19.8 4.1,19 3.3,18.2 3.3,17.9 3.4,17.8 4.2,16.7 4.6,16 4.8,15.7C4.4,15,4,14.2,3.8,13.3L3.4,13.2 1.4,12.9 1.2,12.9 1.2,10.3 1.4,10.3 3.5,9.99999999999999 3.8,9.9C4,8.99999999999999,4.3,8.2,4.8,7.4L4.1,6.4 3.3,5.4 3.2,5.3 3.2,5 4,4.1 4.8,3.3 5.1,3.3 5.2,3.4 7,4.7 7.2,4.9C8,4.3,8.8,3.9,9.8,3.7L10,2.6 10.1,1.3z M13.9,1.3L14.1,2.8C14.7,3,15.3,3.2,15.8,3.5L17,2.6C17.1,2.5 17.4,2.3 17.7,2.2 18,2.1 18.4,2.2 18.8,2.5L19.6,3.3 20.4,4.1C20.7,4.4 20.8,4.8 20.7,5.2 20.6,5.5 20.5,5.7 20.3,5.9L19.5,7C19.8,7.6,20.1,8.2,20.3,8.8L21.7,9C21.9,9 22.2,9.1 22.4,9.2 22.7,9.4 22.9,9.7 22.9,10.2L22.9,12.6C22.9,13.1 22.7,13.4 22.4,13.6 22.2,13.8 21.9,13.8 21.7,13.8L20.3,14C20.1,14.6,19.9,15.2,19.6,15.7L20.4,16.8C20.5,16.9 20.7,17.2 20.8,17.5 20.9,17.8 20.8,18.2 20.5,18.6L19.7,19.4 18.9,20.2C18.6,20.5 18.2,20.6 17.8,20.5 17.5,20.4 17.3,20.3 17.1,20.1L15.9,19.2C15.3,19.5,14.7,19.7,14.1,19.9L13.9,21.4C13.9,21.6 13.8,21.9 13.7,22.1 13.5,22.4 13.2,22.6 12.7,22.6L10.3,22.6C9.8,22.6 9.5,22.4 9.3,22.1 9.1,21.9 9.1,21.6 9.1,21.4L8.9,19.8C8.3,19.6,7.8,19.4,7.2,19.1L5.9,20.1C5.8,20.2 5.5,20.4 5.2,20.5 4.9,20.6 4.5,20.5 4.1,20.2L3.3,19.4 2.5,18.6C2.2,18.3 2.1,17.9 2.2,17.5 2.3,17.2 2.4,17 2.6,16.8L3.6,15.4C3.4,14.9,3.2,14.5,3,14L1.2,14C1,14 0.7,13.9 0.5,13.8 0.2,13.6 0,13.3 0,12.8L0,10.4C0,9.9 0.2,9.6 0.5,9.4 0.8,9.2 1,9.2 1.2,9.2L3,8.9 3.6,7.4 2.5,6C2.4,5.8 2.2,5.6 2.2,5.3 2.1,5 2.2,4.6 2.5,4.2L3.3,3.4 4.1,2.6C4.4,2.3 4.8,2.2 5.2,2.3 5.5,2.4 5.7,2.5 5.9,2.7L7.2,3.7C7.7,3.4,8.2,3.2,8.8,3L9,1.4C9,1.2 9.1,0.9 9.2,0.7 9.5,0.3 9.8,0 10.3,0L12.7,0C13.2,0 13.5,0.2 13.7,0.5 13.8,0.8 13.9,1.1 13.9,1.3z" />
-                <GeometryDrawing>
-                    <GeometryDrawing.Pen>
-                        <Pen Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Pressed}" Thickness="1" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter" />
-                    </GeometryDrawing.Pen>
-                    <GeometryDrawing.Geometry>
-                        <EllipseGeometry RadiusX="3.4" RadiusY="3.4" Center="11.5,11.5" />
-                    </GeometryDrawing.Geometry>
-                </GeometryDrawing>
-            </DrawingGroup>
-        </DrawingImage.Drawing>
-    </DrawingImage>
-
-</ResourceDictionary>
--- a/resource/Images/bg_login.jpeg
+++ b/resource/Images/bg_login.jpeg
--- a/resource/Images/btn_search_001.png
+++ b/resource/Images/btn_search_001.png
--- a/resource/Images/ico_pw.png
+++ b/resource/Images/ico_pw.png
--- a/resource/Images/ico_user.png
+++ b/resource/Images/ico_user.png
--- a/src/WPFBeginner/App.xaml
+++ b/src/WPFBeginner/App.xaml
@@ -0,0 +1,16 @@
+<Application x:Class="WPFBeginner.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:WPFBeginner"
+             xmlns:converters="clr-namespace:WPFBeginner.Converters">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Resources/Themes/DefaultTheme.xaml"/>
+                <ResourceDictionary Source="Resources/Languages/ko-KR.xaml"/>
+            </ResourceDictionary.MergedDictionaries>
+
+            <converters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter"/>
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>
--- a/src/WPFBeginner/App.xaml.cs
+++ b/src/WPFBeginner/App.xaml.cs
@@ -0,0 +1,52 @@
+using System.Windows;
+using Microsoft.Extensions.DependencyInjection;
+using WPFBeginner.Services;
+using WPFBeginner.ViewModels;
+using WPFBeginner.Views;
+
+namespace WPFBeginner;
+
+public partial class App : Application
+{
+    private static IServiceProvider? _serviceProvider;
+
+    protected override void OnStartup(StartupEventArgs e)
+    {
+        base.OnStartup(e);
+
+        var services = new ServiceCollection();
+        ConfigureServices(services);
+        _serviceProvider = services.BuildServiceProvider();
+
+        // Load settings first
+        var settingsService = _serviceProvider.GetRequiredService<ISettingsService>();
+        settingsService.Load();
+
+        // Show login window
+        var loginWindow = new LoginWindow();
+        loginWindow.Show();
+    }
+
+    private static void ConfigureServices(IServiceCollection services)
+    {
+        // Services
+        services.AddSingleton<ISettingsService, SettingsService>();
+        services.AddSingleton<IMemberService, MemberService>();
+
+        // ViewModels
+        services.AddTransient<LoginViewModel>();
+        services.AddTransient<MainViewModel>();
+        services.AddTransient<RegistViewModel>();
+    }
+
+    public static T GetService<T>() where T : class
+    {
+        if (_serviceProvider == null)
+        {
+            throw new InvalidOperationException("Service provider is not initialized.");
+        }
+
+        return _serviceProvider.GetRequiredService<T>();
+    }
+}
+
--- a/src/WPFEduSolution/WPFBeginner/AssemblyInfo.cs
+++ b/src/WPFEduSolution/WPFBeginner/AssemblyInfo.cs
@@ -1,6 +1,6 @@
 using System.Windows;

-[assembly: ThemeInfo(
+[assembly:ThemeInfo(
    ResourceDictionaryLocation.None,            //where theme specific resource dictionaries are located
                                                //(used if a resource is not found in the page,
                                                // or application resource dictionaries)
--- a/src/WPFBeginner/Controls/InputPanel.xaml
+++ b/src/WPFBeginner/Controls/InputPanel.xaml
@@ -0,0 +1,22 @@
+<UserControl x:Class="WPFBeginner.Controls.InputPanel"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             x:Name="Root">
+
+    <StackPanel>
+        <StackPanel Orientation="Horizontal">
+            <Label Content="{Binding LabelText, ElementName=Root}"
+                   Style="{DynamicResource DefaultLabelStyle}"/>
+            <TextBlock Text="*"
+                       Foreground="{DynamicResource ErrorBrush}"
+                       Visibility="{Binding IsRequired, ElementName=Root, Converter={StaticResource BoolToVisibilityConverter}}"
+                       Margin="2,0,0,0"
+                       VerticalAlignment="Center"/>
+        </StackPanel>
+        <TextBox Text="{Binding Text, ElementName=Root, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                 Style="{DynamicResource DefaultTextBoxStyle}"/>
+    </StackPanel>
+</UserControl>
--- a/src/WPFBeginner/Controls/InputPanel.xaml.cs
+++ b/src/WPFBeginner/Controls/InputPanel.xaml.cs
@@ -0,0 +1,53 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace WPFBeginner.Controls;
+
+public partial class InputPanel : UserControl
+{
+    public static readonly DependencyProperty LabelTextProperty =
+        DependencyProperty.Register(
+            nameof(LabelText),
+            typeof(string),
+            typeof(InputPanel),
+            new PropertyMetadata(string.Empty));
+
+    public static readonly DependencyProperty TextProperty =
+        DependencyProperty.Register(
+            nameof(Text),
+            typeof(string),
+            typeof(InputPanel),
+            new FrameworkPropertyMetadata(
+                string.Empty,
+                FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));
+
+    public static readonly DependencyProperty IsRequiredProperty =
+        DependencyProperty.Register(
+            nameof(IsRequired),
+            typeof(bool),
+            typeof(InputPanel),
+            new PropertyMetadata(false));
+
+    public string LabelText
+    {
+        get => (string)GetValue(LabelTextProperty);
+        set => SetValue(LabelTextProperty, value);
+    }
+
+    public string Text
+    {
+        get => (string)GetValue(TextProperty);
+        set => SetValue(TextProperty, value);
+    }
+
+    public bool IsRequired
+    {
+        get => (bool)GetValue(IsRequiredProperty);
+        set => SetValue(IsRequiredProperty, value);
+    }
+
+    public InputPanel()
+    {
+        InitializeComponent();
+    }
+}
--- a/src/WPFBeginner/Converters/BoolToVisibilityConverter.cs
+++ b/src/WPFBeginner/Converters/BoolToVisibilityConverter.cs
@@ -0,0 +1,26 @@
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace WPFBeginner.Converters;
+
+public class BoolToVisibilityConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        if (value is bool boolValue)
+        {
+            return boolValue ? Visibility.Visible : Visibility.Collapsed;
+        }
+        return Visibility.Collapsed;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        if (value is Visibility visibility)
+        {
+            return visibility == Visibility.Visible;
+        }
+        return false;
+    }
+}
--- a/src/WPFBeginner/Models/AppSettings.cs
+++ b/src/WPFBeginner/Models/AppSettings.cs
@@ -0,0 +1,15 @@
+namespace WPFBeginner.Models;
+
+public class AppSettings
+{
+    public LoginSettings Login { get; set; } = new();
+    public string Language { get; set; } = "ko-KR";
+    public string Theme { get; set; } = "DefaultTheme";
+    public List<Member> DefaultMembers { get; set; } = new();
+}
+
+public class LoginSettings
+{
+    public string User { get; set; } = "admin";
+    public string Password { get; set; } = "0000";
+}
--- a/src/WPFBeginner/Models/Member.cs
+++ b/src/WPFBeginner/Models/Member.cs
@@ -0,0 +1,33 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace WPFBeginner.Models;
+
+public partial class Member : ObservableObject
+{
+    [ObservableProperty]
+    private string _name = string.Empty;
+
+    [ObservableProperty]
+    private string _call = string.Empty;
+
+    [ObservableProperty]
+    private string _eMail = string.Empty;
+
+    [ObservableProperty]
+    private string _no = string.Empty;
+
+    public Member() { }
+
+    public Member(string name, string call, string email, string no)
+    {
+        Name = name;
+        Call = call;
+        EMail = email;
+        No = no;
+    }
+
+    public Member Clone()
+    {
+        return new Member(Name, Call, EMail, No);
+    }
+}
--- a/src/WPFBeginner/Resources/Languages/en-US.xaml
+++ b/src/WPFBeginner/Resources/Languages/en-US.xaml
@@ -0,0 +1,53 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:system="clr-namespace:System;assembly=mscorlib">
+
+    <!-- Login Window -->
+    <system:String x:Key="Login_Title">Login</system:String>
+    <system:String x:Key="Login_Welcome">Welcome</system:String>
+    <system:String x:Key="Login_UserId">User ID</system:String>
+    <system:String x:Key="Login_Password">Password</system:String>
+    <system:String x:Key="Login_LoginButton">Login</system:String>
+    <system:String x:Key="Login_Error">Invalid ID or Password</system:String>
+
+    <!-- Main Window -->
+    <system:String x:Key="Main_Title">Member Management</system:String>
+    <system:String x:Key="Main_Search">Search</system:String>
+    <system:String x:Key="Main_SearchPlaceholder">Enter search keyword</system:String>
+    <system:String x:Key="Main_Add">Add</system:String>
+    <system:String x:Key="Main_Delete">Delete</system:String>
+    <system:String x:Key="Main_Reset">Reset</system:String>
+    <system:String x:Key="Main_Settings">Settings</system:String>
+    <system:String x:Key="Main_NoResults">No results found</system:String>
+
+    <!-- Main Window - DataGrid -->
+    <system:String x:Key="Main_Column_Name">Name</system:String>
+    <system:String x:Key="Main_Column_Call">Phone</system:String>
+    <system:String x:Key="Main_Column_Email">Email</system:String>
+    <system:String x:Key="Main_Column_No">Employee No.</system:String>
+
+    <!-- Main Window - Settings -->
+    <system:String x:Key="Settings_Language">Language</system:String>
+    <system:String x:Key="Settings_Korean">한국어</system:String>
+    <system:String x:Key="Settings_English">English</system:String>
+    <system:String x:Key="Settings_Theme">Theme</system:String>
+    <system:String x:Key="Settings_DefaultTheme">Default (Dark)</system:String>
+    <system:String x:Key="Settings_LightTheme">Light</system:String>
+
+    <!-- Registration Window -->
+    <system:String x:Key="Regist_Title">Member Registration</system:String>
+    <system:String x:Key="Regist_Name">Name</system:String>
+    <system:String x:Key="Regist_Call">Phone</system:String>
+    <system:String x:Key="Regist_Email">Email</system:String>
+    <system:String x:Key="Regist_No">Employee No.</system:String>
+    <system:String x:Key="Regist_Register">Register</system:String>
+    <system:String x:Key="Regist_Cancel">Cancel</system:String>
+    <system:String x:Key="Regist_NameRequired">Name is required</system:String>
+    <system:String x:Key="Regist_EmailRequired">Email is required</system:String>
+
+    <!-- Common -->
+    <system:String x:Key="Common_Close">Close</system:String>
+    <system:String x:Key="Common_OK">OK</system:String>
+    <system:String x:Key="Common_Cancel">Cancel</system:String>
+
+</ResourceDictionary>
--- a/src/WPFBeginner/Resources/Languages/ko-KR.xaml
+++ b/src/WPFBeginner/Resources/Languages/ko-KR.xaml
@@ -0,0 +1,53 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:system="clr-namespace:System;assembly=mscorlib">
+
+    <!-- Login Window -->
+    <system:String x:Key="Login_Title">로그인</system:String>
+    <system:String x:Key="Login_Welcome">환영합니다</system:String>
+    <system:String x:Key="Login_UserId">아이디</system:String>
+    <system:String x:Key="Login_Password">비밀번호</system:String>
+    <system:String x:Key="Login_LoginButton">로그인</system:String>
+    <system:String x:Key="Login_Error">아이디 또는 비밀번호가 틀렸습니다</system:String>
+
+    <!-- Main Window -->
+    <system:String x:Key="Main_Title">회원 관리</system:String>
+    <system:String x:Key="Main_Search">검색</system:String>
+    <system:String x:Key="Main_SearchPlaceholder">검색어를 입력하세요</system:String>
+    <system:String x:Key="Main_Add">추가</system:String>
+    <system:String x:Key="Main_Delete">삭제</system:String>
+    <system:String x:Key="Main_Reset">초기화</system:String>
+    <system:String x:Key="Main_Settings">설정</system:String>
+    <system:String x:Key="Main_NoResults">검색 결과가 없습니다</system:String>
+
+    <!-- Main Window - DataGrid -->
+    <system:String x:Key="Main_Column_Name">이름</system:String>
+    <system:String x:Key="Main_Column_Call">연락처</system:String>
+    <system:String x:Key="Main_Column_Email">이메일</system:String>
+    <system:String x:Key="Main_Column_No">사번</system:String>
+
+    <!-- Main Window - Settings -->
+    <system:String x:Key="Settings_Language">언어</system:String>
+    <system:String x:Key="Settings_Korean">한국어</system:String>
+    <system:String x:Key="Settings_English">English</system:String>
+    <system:String x:Key="Settings_Theme">테마</system:String>
+    <system:String x:Key="Settings_DefaultTheme">기본 (어두운)</system:String>
+    <system:String x:Key="Settings_LightTheme">밝은</system:String>
+
+    <!-- Registration Window -->
+    <system:String x:Key="Regist_Title">회원 등록</system:String>
+    <system:String x:Key="Regist_Name">이름</system:String>
+    <system:String x:Key="Regist_Call">연락처</system:String>
+    <system:String x:Key="Regist_Email">이메일</system:String>
+    <system:String x:Key="Regist_No">사번</system:String>
+    <system:String x:Key="Regist_Register">등록</system:String>
+    <system:String x:Key="Regist_Cancel">취소</system:String>
+    <system:String x:Key="Regist_NameRequired">이름은 필수입니다</system:String>
+    <system:String x:Key="Regist_EmailRequired">이메일은 필수입니다</system:String>
+
+    <!-- Common -->
+    <system:String x:Key="Common_Close">닫기</system:String>
+    <system:String x:Key="Common_OK">확인</system:String>
+    <system:String x:Key="Common_Cancel">취소</system:String>
+
+</ResourceDictionary>
--- a/src/WPFBeginner/Resources/Themes/DefaultTheme.xaml
+++ b/src/WPFBeginner/Resources/Themes/DefaultTheme.xaml
@@ -0,0 +1,192 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <!-- Colors -->
+    <Color x:Key="PrimaryColor">#2D2D30</Color>
+    <Color x:Key="SecondaryColor">#3E3E42</Color>
+    <Color x:Key="AccentColor">#007ACC</Color>
+    <Color x:Key="TextColor">#FFFFFF</Color>
+    <Color x:Key="SubTextColor">#A0A0A0</Color>
+    <Color x:Key="BorderColor">#555555</Color>
+    <Color x:Key="ErrorColor">#FF5555</Color>
+    <Color x:Key="SuccessColor">#55FF55</Color>
+
+    <!-- Brushes -->
+    <SolidColorBrush x:Key="PrimaryBrush" Color="{StaticResource PrimaryColor}"/>
+    <SolidColorBrush x:Key="SecondaryBrush" Color="{StaticResource SecondaryColor}"/>
+    <SolidColorBrush x:Key="AccentBrush" Color="{StaticResource AccentColor}"/>
+    <SolidColorBrush x:Key="TextBrush" Color="{StaticResource TextColor}"/>
+    <SolidColorBrush x:Key="SubTextBrush" Color="{StaticResource SubTextColor}"/>
+    <SolidColorBrush x:Key="BorderBrush" Color="{StaticResource BorderColor}"/>
+    <SolidColorBrush x:Key="ErrorBrush" Color="{StaticResource ErrorColor}"/>
+    <SolidColorBrush x:Key="SuccessBrush" Color="{StaticResource SuccessColor}"/>
+
+    <!-- Window Background -->
+    <SolidColorBrush x:Key="WindowBackgroundBrush" Color="{StaticResource PrimaryColor}"/>
+
+    <!-- Button Style -->
+    <Style x:Key="PrimaryButtonStyle" TargetType="Button">
+        <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderThickness" Value="0"/>
+        <Setter Property="Padding" Value="15,8"/>
+        <Setter Property="Cursor" Value="Hand"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="Button">
+                    <Border Background="{TemplateBinding Background}"
+                            CornerRadius="4"
+                            Padding="{TemplateBinding Padding}">
+                        <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Setter Property="Background" Value="#1A8AD4"/>
+                        </Trigger>
+                        <Trigger Property="IsPressed" Value="True">
+                            <Setter Property="Background" Value="#005A9E"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <Style x:Key="SecondaryButtonStyle" TargetType="Button">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="15,8"/>
+        <Setter Property="Cursor" Value="Hand"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="Button">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4"
+                            Padding="{TemplateBinding Padding}">
+                        <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Setter Property="Background" Value="#4E4E52"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- TextBox Style -->
+    <Style x:Key="DefaultTextBoxStyle" TargetType="TextBox">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="8,6"/>
+        <Setter Property="CaretBrush" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="TextBox">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4">
+                        <ScrollViewer x:Name="PART_ContentHost" Margin="{TemplateBinding Padding}"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsFocused" Value="True">
+                            <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- PasswordBox Style -->
+    <Style x:Key="DefaultPasswordBoxStyle" TargetType="PasswordBox">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="8,6"/>
+        <Setter Property="CaretBrush" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="PasswordBox">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4">
+                        <ScrollViewer x:Name="PART_ContentHost" Margin="{TemplateBinding Padding}"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsFocused" Value="True">
+                            <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- Label Style -->
+    <Style x:Key="DefaultLabelStyle" TargetType="Label">
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Padding" Value="0,0,0,4"/>
+    </Style>
+
+    <!-- DataGrid Style -->
+    <Style x:Key="DefaultDataGridStyle" TargetType="DataGrid">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="RowBackground" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="AlternatingRowBackground" Value="{StaticResource PrimaryBrush}"/>
+        <Setter Property="GridLinesVisibility" Value="Horizontal"/>
+        <Setter Property="HorizontalGridLinesBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="HeadersVisibility" Value="Column"/>
+    </Style>
+
+    <Style TargetType="DataGridColumnHeader">
+        <Setter Property="Background" Value="{StaticResource PrimaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Padding" Value="10,8"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="0,0,1,1"/>
+    </Style>
+
+    <Style TargetType="DataGridCell">
+        <Setter Property="Padding" Value="10,6"/>
+        <Setter Property="BorderThickness" Value="0"/>
+        <Style.Triggers>
+            <Trigger Property="IsSelected" Value="True">
+                <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+                <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+
+    <Style TargetType="DataGridRow">
+        <Setter Property="Background" Value="Transparent"/>
+        <Style.Triggers>
+            <Trigger Property="IsSelected" Value="True">
+                <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+            </Trigger>
+            <Trigger Property="IsMouseOver" Value="True">
+                <Setter Property="Background" Value="#3E3E42"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+
+    <!-- RadioButton Style -->
+    <Style x:Key="DefaultRadioButtonStyle" TargetType="RadioButton">
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Margin" Value="0,4"/>
+    </Style>
+
+</ResourceDictionary>
--- a/src/WPFBeginner/Resources/Themes/LightTheme.xaml
+++ b/src/WPFBeginner/Resources/Themes/LightTheme.xaml
@@ -0,0 +1,192 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <!-- Colors -->
+    <Color x:Key="PrimaryColor">#FFFFFF</Color>
+    <Color x:Key="SecondaryColor">#F5F5F5</Color>
+    <Color x:Key="AccentColor">#007ACC</Color>
+    <Color x:Key="TextColor">#1E1E1E</Color>
+    <Color x:Key="SubTextColor">#666666</Color>
+    <Color x:Key="BorderColor">#CCCCCC</Color>
+    <Color x:Key="ErrorColor">#D32F2F</Color>
+    <Color x:Key="SuccessColor">#388E3C</Color>
+
+    <!-- Brushes -->
+    <SolidColorBrush x:Key="PrimaryBrush" Color="{StaticResource PrimaryColor}"/>
+    <SolidColorBrush x:Key="SecondaryBrush" Color="{StaticResource SecondaryColor}"/>
+    <SolidColorBrush x:Key="AccentBrush" Color="{StaticResource AccentColor}"/>
+    <SolidColorBrush x:Key="TextBrush" Color="{StaticResource TextColor}"/>
+    <SolidColorBrush x:Key="SubTextBrush" Color="{StaticResource SubTextColor}"/>
+    <SolidColorBrush x:Key="BorderBrush" Color="{StaticResource BorderColor}"/>
+    <SolidColorBrush x:Key="ErrorBrush" Color="{StaticResource ErrorColor}"/>
+    <SolidColorBrush x:Key="SuccessBrush" Color="{StaticResource SuccessColor}"/>
+
+    <!-- Window Background -->
+    <SolidColorBrush x:Key="WindowBackgroundBrush" Color="{StaticResource PrimaryColor}"/>
+
+    <!-- Button Style -->
+    <Style x:Key="PrimaryButtonStyle" TargetType="Button">
+        <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+        <Setter Property="Foreground" Value="White"/>
+        <Setter Property="BorderThickness" Value="0"/>
+        <Setter Property="Padding" Value="15,8"/>
+        <Setter Property="Cursor" Value="Hand"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="Button">
+                    <Border Background="{TemplateBinding Background}"
+                            CornerRadius="4"
+                            Padding="{TemplateBinding Padding}">
+                        <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Setter Property="Background" Value="#1A8AD4"/>
+                        </Trigger>
+                        <Trigger Property="IsPressed" Value="True">
+                            <Setter Property="Background" Value="#005A9E"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <Style x:Key="SecondaryButtonStyle" TargetType="Button">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="15,8"/>
+        <Setter Property="Cursor" Value="Hand"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="Button">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4"
+                            Padding="{TemplateBinding Padding}">
+                        <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Setter Property="Background" Value="#E0E0E0"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- TextBox Style -->
+    <Style x:Key="DefaultTextBoxStyle" TargetType="TextBox">
+        <Setter Property="Background" Value="White"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="8,6"/>
+        <Setter Property="CaretBrush" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="TextBox">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4">
+                        <ScrollViewer x:Name="PART_ContentHost" Margin="{TemplateBinding Padding}"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsFocused" Value="True">
+                            <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- PasswordBox Style -->
+    <Style x:Key="DefaultPasswordBoxStyle" TargetType="PasswordBox">
+        <Setter Property="Background" Value="White"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="8,6"/>
+        <Setter Property="CaretBrush" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="PasswordBox">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="4">
+                        <ScrollViewer x:Name="PART_ContentHost" Margin="{TemplateBinding Padding}"/>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsFocused" Value="True">
+                            <Setter Property="BorderBrush" Value="{StaticResource AccentBrush}"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- Label Style -->
+    <Style x:Key="DefaultLabelStyle" TargetType="Label">
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Padding" Value="0,0,0,4"/>
+    </Style>
+
+    <!-- DataGrid Style -->
+    <Style x:Key="DefaultDataGridStyle" TargetType="DataGrid">
+        <Setter Property="Background" Value="White"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="RowBackground" Value="White"/>
+        <Setter Property="AlternatingRowBackground" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="GridLinesVisibility" Value="Horizontal"/>
+        <Setter Property="HorizontalGridLinesBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="HeadersVisibility" Value="Column"/>
+    </Style>
+
+    <Style TargetType="DataGridColumnHeader">
+        <Setter Property="Background" Value="{StaticResource SecondaryBrush}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Padding" Value="10,8"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="BorderThickness" Value="0,0,1,1"/>
+    </Style>
+
+    <Style TargetType="DataGridCell">
+        <Setter Property="Padding" Value="10,6"/>
+        <Setter Property="BorderThickness" Value="0"/>
+        <Style.Triggers>
+            <Trigger Property="IsSelected" Value="True">
+                <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+                <Setter Property="Foreground" Value="White"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+
+    <Style TargetType="DataGridRow">
+        <Setter Property="Background" Value="Transparent"/>
+        <Style.Triggers>
+            <Trigger Property="IsSelected" Value="True">
+                <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+            </Trigger>
+            <Trigger Property="IsMouseOver" Value="True">
+                <Setter Property="Background" Value="#E8E8E8"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+
+    <!-- RadioButton Style -->
+    <Style x:Key="DefaultRadioButtonStyle" TargetType="RadioButton">
+        <Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
+        <Setter Property="Margin" Value="0,4"/>
+    </Style>
+
+</ResourceDictionary>
--- a/src/WPFBeginner/Services/MemberService.cs
+++ b/src/WPFBeginner/Services/MemberService.cs
@@ -0,0 +1,61 @@
+using System.Collections.ObjectModel;
+using WPFBeginner.Models;
+
+namespace WPFBeginner.Services;
+
+public interface IMemberService
+{
+    ObservableCollection<Member> Members { get; }
+    void LoadDefaultMembers(List<Member> defaultMembers);
+    void Add(Member member);
+    void Remove(Member member);
+    void Reset();
+    IEnumerable<Member> Search(string keyword);
+}
+
+public class MemberService : IMemberService
+{
+    private readonly List<Member> _defaultMembers = new();
+    public ObservableCollection<Member> Members { get; } = new();
+
+    public void LoadDefaultMembers(List<Member> defaultMembers)
+    {
+        _defaultMembers.Clear();
+        _defaultMembers.AddRange(defaultMembers.Select(m => m.Clone()));
+        Reset();
+    }
+
+    public void Add(Member member)
+    {
+        Members.Add(member);
+    }
+
+    public void Remove(Member member)
+    {
+        Members.Remove(member);
+    }
+
+    public void Reset()
+    {
+        Members.Clear();
+        foreach (var member in _defaultMembers)
+        {
+            Members.Add(member.Clone());
+        }
+    }
+
+    public IEnumerable<Member> Search(string keyword)
+    {
+        if (string.IsNullOrWhiteSpace(keyword))
+        {
+            return Members;
+        }
+
+        var lowerKeyword = keyword.ToLower();
+        return Members.Where(m =>
+            m.Name.ToLower().Contains(lowerKeyword) ||
+            m.Call.ToLower().Contains(lowerKeyword) ||
+            m.EMail.ToLower().Contains(lowerKeyword) ||
+            m.No.ToLower().Contains(lowerKeyword));
+    }
+}
--- a/src/WPFBeginner/Services/SettingsService.cs
+++ b/src/WPFBeginner/Services/SettingsService.cs
@@ -0,0 +1,114 @@
+using System.IO;
+using System.Text.Json;
+using System.Windows;
+using WPFBeginner.Models;
+
+namespace WPFBeginner.Services;
+
+public interface ISettingsService
+{
+    AppSettings Settings { get; }
+    void Load();
+    void Save();
+    void SetLanguage(string language);
+    void SetTheme(string theme);
+    string CurrentLanguage { get; }
+    string CurrentTheme { get; }
+}
+
+public class SettingsService : ISettingsService
+{
+    private readonly string _settingsPath;
+    private AppSettings _settings = new();
+
+    public AppSettings Settings => _settings;
+    public string CurrentLanguage => _settings.Language;
+    public string CurrentTheme => _settings.Theme;
+
+    public SettingsService()
+    {
+        _settingsPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "appsettings.json");
+    }
+
+    public void Load()
+    {
+        try
+        {
+            if (File.Exists(_settingsPath))
+            {
+                var json = File.ReadAllText(_settingsPath);
+                var options = new JsonSerializerOptions { PropertyNameCaseInsensitive = true };
+                _settings = JsonSerializer.Deserialize<AppSettings>(json, options) ?? new AppSettings();
+            }
+        }
+        catch
+        {
+            _settings = new AppSettings();
+        }
+
+        ApplyLanguage(_settings.Language);
+        ApplyTheme(_settings.Theme);
+    }
+
+    public void Save()
+    {
+        try
+        {
+            var options = new JsonSerializerOptions { WriteIndented = true };
+            var json = JsonSerializer.Serialize(_settings, options);
+            File.WriteAllText(_settingsPath, json);
+        }
+        catch
+        {
+            // Ignore save errors
+        }
+    }
+
+    public void SetLanguage(string language)
+    {
+        _settings.Language = language;
+        ApplyLanguage(language);
+        Save();
+    }
+
+    public void SetTheme(string theme)
+    {
+        _settings.Theme = theme;
+        ApplyTheme(theme);
+        Save();
+    }
+
+    private void ApplyLanguage(string language)
+    {
+        var dict = new ResourceDictionary();
+        var langFile = language == "en-US" ? "en-US" : "ko-KR";
+        dict.Source = new Uri($"pack://application:,,,/Resources/Languages/{langFile}.xaml");
+
+        // Remove existing language dictionary
+        var existingLang = Application.Current.Resources.MergedDictionaries
+            .FirstOrDefault(d => d.Source?.OriginalString.Contains("/Languages/") == true);
+        if (existingLang != null)
+        {
+            Application.Current.Resources.MergedDictionaries.Remove(existingLang);
+        }
+
+        Application.Current.Resources.MergedDictionaries.Add(dict);
+    }
+
+    private void ApplyTheme(string theme)
+    {
+        var dict = new ResourceDictionary();
+        var themeFile = theme == "LightTheme" ? "LightTheme" : "DefaultTheme";
+        dict.Source = new Uri($"pack://application:,,,/Resources/Themes/{themeFile}.xaml");
+
+        // Remove existing theme dictionary
+        var existingTheme = Application.Current.Resources.MergedDictionaries
+            .FirstOrDefault(d => d.Source?.OriginalString.Contains("/Themes/") == true);
+        if (existingTheme != null)
+        {
+            Application.Current.Resources.MergedDictionaries.Remove(existingTheme);
+        }
+
+        Application.Current.Resources.MergedDictionaries.Add(dict);
+    }
+}
--- a/src/WPFBeginner/ViewModels/LoginViewModel.cs
+++ b/src/WPFBeginner/ViewModels/LoginViewModel.cs
@@ -0,0 +1,62 @@
+using System.Windows;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using WPFBeginner.Services;
+using WPFBeginner.Views;
+
+namespace WPFBeginner.ViewModels;
+
+public partial class LoginViewModel : ObservableObject
+{
+    private readonly ISettingsService _settingsService;
+
+    [ObservableProperty]
+    private string _userId = string.Empty;
+
+    [ObservableProperty]
+    private string _password = string.Empty;
+
+    [ObservableProperty]
+    private string _errorMessage = string.Empty;
+
+    [ObservableProperty]
+    private bool _hasError;
+
+    public string WelcomeMessage => _settingsService.CurrentLanguage == "en-US"
+        ? "Welcome"
+        : "환영합니다";
+
+    public LoginViewModel(ISettingsService settingsService)
+    {
+        _settingsService = settingsService;
+    }
+
+    [RelayCommand]
+    private void Login(Window window)
+    {
+        var settings = _settingsService.Settings.Login;
+
+        if (UserId == settings.User && Password == settings.Password)
+        {
+            HasError = false;
+            ErrorMessage = string.Empty;
+
+            var mainWindow = new MainWindow();
+            mainWindow.Show();
+            window.Close();
+        }
+        else
+        {
+            HasError = true;
+            ErrorMessage = _settingsService.CurrentLanguage == "en-US"
+                ? "Invalid ID or Password"
+                : "아이디 또는 비밀번호가 틀렸습니다";
+        }
+    }
+
+    [RelayCommand]
+    private void Close(Window window)
+    {
+        Application.Current.Shutdown();
+    }
+}
--- a/src/WPFBeginner/ViewModels/MainViewModel.cs
+++ b/src/WPFBeginner/ViewModels/MainViewModel.cs
@@ -0,0 +1,165 @@
+using System.Collections.ObjectModel;
+using System.Windows;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using WPFBeginner.Models;
+using WPFBeginner.Services;
+using WPFBeginner.Views;
+
+namespace WPFBeginner.ViewModels;
+
+public partial class MainViewModel : ObservableObject
+{
+    private readonly ISettingsService _settingsService;
+    private readonly IMemberService _memberService;
+
+    [ObservableProperty]
+    private string _searchKeyword = string.Empty;
+
+    [ObservableProperty]
+    private Member? _selectedMember;
+
+    [ObservableProperty]
+    private ObservableCollection<Member> _filteredMembers = new();
+
+    [ObservableProperty]
+    private bool _isKorean = true;
+
+    [ObservableProperty]
+    private bool _isEnglish;
+
+    [ObservableProperty]
+    private bool _isDefaultTheme = true;
+
+    [ObservableProperty]
+    private bool _isLightTheme;
+
+    [ObservableProperty]
+    private string _searchResultMessage = string.Empty;
+
+    [ObservableProperty]
+    private bool _hasSearchResult = true;
+
+    public MainViewModel(ISettingsService settingsService, IMemberService memberService)
+    {
+        _settingsService = settingsService;
+        _memberService = memberService;
+
+        // Load default members
+        _memberService.LoadDefaultMembers(_settingsService.Settings.DefaultMembers);
+
+        // Set initial language/theme based on settings
+        IsKorean = _settingsService.CurrentLanguage == "ko-KR";
+        IsEnglish = _settingsService.CurrentLanguage == "en-US";
+        IsDefaultTheme = _settingsService.CurrentTheme == "DefaultTheme";
+        IsLightTheme = _settingsService.CurrentTheme == "LightTheme";
+
+        // Initialize filtered members
+        RefreshFilteredMembers();
+    }
+
+    private void RefreshFilteredMembers()
+    {
+        FilteredMembers = new ObservableCollection<Member>(_memberService.Members);
+    }
+
+    [RelayCommand]
+    private void Search()
+    {
+        var results = _memberService.Search(SearchKeyword).ToList();
+        FilteredMembers = new ObservableCollection<Member>(results);
+
+        if (results.Count == 0)
+        {
+            HasSearchResult = false;
+            SearchResultMessage = _settingsService.CurrentLanguage == "en-US"
+                ? "No results found"
+                : "검색 결과가 없습니다";
+
+            MessageBox.Show(SearchResultMessage,
+                _settingsService.CurrentLanguage == "en-US" ? "Search" : "검색",
+                MessageBoxButton.OK,
+                MessageBoxImage.Information);
+        }
+        else
+        {
+            HasSearchResult = true;
+            SearchResultMessage = string.Empty;
+        }
+    }
+
+    [RelayCommand]
+    private void AddMember()
+    {
+        var registWindow = new RegistWindow();
+        registWindow.MemberAdded += OnMemberAdded;
+        registWindow.ShowDialog();
+    }
+
+    private void OnMemberAdded(object? sender, Member member)
+    {
+        _memberService.Add(member);
+        RefreshFilteredMembers();
+    }
+
+    [RelayCommand]
+    private void DeleteMember()
+    {
+        if (SelectedMember != null)
+        {
+            _memberService.Remove(SelectedMember);
+            RefreshFilteredMembers();
+            SelectedMember = null;
+        }
+    }
+
+    [RelayCommand]
+    private void Reset()
+    {
+        SearchKeyword = string.Empty;
+        _memberService.Reset();
+        RefreshFilteredMembers();
+        HasSearchResult = true;
+        SearchResultMessage = string.Empty;
+    }
+
+    [RelayCommand]
+    private void SetKorean()
+    {
+        IsKorean = true;
+        IsEnglish = false;
+        _settingsService.SetLanguage("ko-KR");
+        OnPropertyChanged(nameof(IsKorean));
+        OnPropertyChanged(nameof(IsEnglish));
+    }
+
+    [RelayCommand]
+    private void SetEnglish()
+    {
+        IsKorean = false;
+        IsEnglish = true;
+        _settingsService.SetLanguage("en-US");
+        OnPropertyChanged(nameof(IsKorean));
+        OnPropertyChanged(nameof(IsEnglish));
+    }
+
+    [RelayCommand]
+    private void SetDefaultTheme()
+    {
+        IsDefaultTheme = true;
+        IsLightTheme = false;
+        _settingsService.SetTheme("DefaultTheme");
+        OnPropertyChanged(nameof(IsDefaultTheme));
+        OnPropertyChanged(nameof(IsLightTheme));
+    }
+
+    [RelayCommand]
+    private void SetLightTheme()
+    {
+        IsDefaultTheme = false;
+        IsLightTheme = true;
+        _settingsService.SetTheme("LightTheme");
+        OnPropertyChanged(nameof(IsDefaultTheme));
+        OnPropertyChanged(nameof(IsLightTheme));
+    }
+}
--- a/src/WPFBeginner/ViewModels/RegistViewModel.cs
+++ b/src/WPFBeginner/ViewModels/RegistViewModel.cs
@@ -0,0 +1,93 @@
+using System.Windows;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using WPFBeginner.Models;
+using WPFBeginner.Services;
+
+namespace WPFBeginner.ViewModels;
+
+public partial class RegistViewModel : ObservableObject
+{
+    private readonly ISettingsService _settingsService;
+
+    [ObservableProperty]
+    private string _name = string.Empty;
+
+    [ObservableProperty]
+    private string _call = string.Empty;
+
+    [ObservableProperty]
+    private string _eMail = string.Empty;
+
+    [ObservableProperty]
+    private string _no = string.Empty;
+
+    [ObservableProperty]
+    private string _errorMessage = string.Empty;
+
+    [ObservableProperty]
+    private bool _hasError;
+
+    public event EventHandler<Member>? MemberAdded;
+
+    public RegistViewModel(ISettingsService settingsService)
+    {
+        _settingsService = settingsService;
+    }
+
+    [RelayCommand]
+    private void Register(Window window)
+    {
+        // Validate required fields
+        if (string.IsNullOrWhiteSpace(Name))
+        {
+            HasError = true;
+            ErrorMessage = _settingsService.CurrentLanguage == "en-US"
+                ? "Name is required"
+                : "이름은 필수입니다";
+            return;
+        }
+
+        if (string.IsNullOrWhiteSpace(EMail))
+        {
+            HasError = true;
+            ErrorMessage = _settingsService.CurrentLanguage == "en-US"
+                ? "Email is required"
+                : "이메일은 필수입니다";
+            return;
+        }
+
+        HasError = false;
+        ErrorMessage = string.Empty;
+
+        var member = new Member(Name, Call, EMail, No);
+        MemberAdded?.Invoke(this, member);
+        window.Close();
+    }
+
+    [RelayCommand]
+    private void Cancel(Window window)
+    {
+        window.Close();
+    }
+
+    [RelayCommand]
+    private void Minimize(Window window)
+    {
+        window.WindowState = WindowState.Minimized;
+    }
+
+    [RelayCommand]
+    private void Maximize(Window window)
+    {
+        window.WindowState = window.WindowState == WindowState.Maximized
+            ? WindowState.Normal
+            : WindowState.Maximized;
+    }
+
+    [RelayCommand]
+    private void Close(Window window)
+    {
+        window.Close();
+    }
+}
--- a/src/WPFBeginner/Views/LoginWindow.xaml
+++ b/src/WPFBeginner/Views/LoginWindow.xaml
@@ -0,0 +1,198 @@
+<Window x:Class="WPFBeginner.Views.LoginWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d"
+        Title="{DynamicResource Login_Title}"
+        Height="540" Width="440"
+        WindowStartupLocation="CenterScreen"
+        WindowStyle="None"
+        AllowsTransparency="True"
+        Background="Transparent"
+        ResizeMode="NoResize">
+
+    <Border Margin="15" CornerRadius="12">
+        <Border.Effect>
+            <DropShadowEffect BlurRadius="15" ShadowDepth="0" Opacity="0.5"/>
+        </Border.Effect>
+        <Border.Background>
+            <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
+                <GradientStop Color="#1a1a2e" Offset="0"/>
+                <GradientStop Color="#16213e" Offset="1"/>
+            </LinearGradientBrush>
+        </Border.Background>
+
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="*"/>
+            </Grid.RowDefinitions>
+
+            <!-- Title Bar -->
+            <Grid Grid.Row="0" Background="Transparent" MouseLeftButtonDown="TitleBar_MouseLeftButtonDown">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+
+                <Button Grid.Column="1"
+                        Content="✕"
+                        Width="45" Height="35"
+                        Background="Transparent"
+                        Foreground="#808080"
+                        BorderThickness="0"
+                        FontSize="14"
+                        Cursor="Hand"
+                        Command="{Binding CloseCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}">
+                    <Button.Style>
+                        <Style TargetType="Button">
+                            <Setter Property="Template">
+                                <Setter.Value>
+                                    <ControlTemplate TargetType="Button">
+                                        <Border Background="{TemplateBinding Background}" CornerRadius="0,12,0,0">
+                                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                                        </Border>
+                                        <ControlTemplate.Triggers>
+                                            <Trigger Property="IsMouseOver" Value="True">
+                                                <Setter Property="Background" Value="#E81123"/>
+                                                <Setter Property="Foreground" Value="White"/>
+                                            </Trigger>
+                                        </ControlTemplate.Triggers>
+                                    </ControlTemplate>
+                                </Setter.Value>
+                            </Setter>
+                        </Style>
+                    </Button.Style>
+                </Button>
+            </Grid>
+
+            <!-- Content -->
+            <StackPanel Grid.Row="1" Margin="40,10,40,30" VerticalAlignment="Center">
+
+                <!-- Logo Icon -->
+                <Border Width="70" Height="70"
+                        CornerRadius="35"
+                        Margin="0,0,0,20"
+                        HorizontalAlignment="Center">
+                    <Border.Background>
+                        <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
+                            <GradientStop Color="#0f3460" Offset="0"/>
+                            <GradientStop Color="#e94560" Offset="1"/>
+                        </LinearGradientBrush>
+                    </Border.Background>
+                    <TextBlock Text="W"
+                               FontSize="32"
+                               FontWeight="Bold"
+                               Foreground="White"
+                               HorizontalAlignment="Center"
+                               VerticalAlignment="Center"/>
+                </Border>
+
+                <!-- Welcome Message -->
+                <TextBlock Text="{DynamicResource Login_Welcome}"
+                           Foreground="White"
+                           FontSize="26"
+                           FontWeight="SemiBold"
+                           HorizontalAlignment="Center"
+                           Margin="0,0,0,5"/>
+
+                <TextBlock Text="WPF Beginner"
+                           Foreground="#808080"
+                           FontSize="13"
+                           HorizontalAlignment="Center"
+                           Margin="0,0,0,25"/>
+
+                <!-- User ID -->
+                <TextBlock Text="{DynamicResource Login_UserId}"
+                           Foreground="#a0a0a0"
+                           FontSize="12"
+                           Margin="5,0,0,6"/>
+                <Border CornerRadius="8" Background="#0f3460" Margin="0,0,0,15">
+                    <TextBox Text="{Binding UserId, UpdateSourceTrigger=PropertyChanged}"
+                             Background="Transparent"
+                             Foreground="White"
+                             BorderThickness="0"
+                             Padding="12,10"
+                             FontSize="14"
+                             CaretBrush="White"/>
+                </Border>
+
+                <!-- Password -->
+                <TextBlock Text="{DynamicResource Login_Password}"
+                           Foreground="#a0a0a0"
+                           FontSize="12"
+                           Margin="5,0,0,6"/>
+                <Border CornerRadius="8" Background="#0f3460" Margin="0,0,0,12">
+                    <PasswordBox x:Name="PasswordBox"
+                                 Background="Transparent"
+                                 Foreground="White"
+                                 BorderThickness="0"
+                                 Padding="12,10"
+                                 FontSize="14"
+                                 CaretBrush="White"
+                                 PasswordChanged="PasswordBox_PasswordChanged"/>
+                </Border>
+
+                <!-- Error Message -->
+                <Border Background="#3d1f2f"
+                        CornerRadius="6"
+                        Padding="10,6"
+                        Margin="0,0,0,10"
+                        Visibility="{Binding HasError, Converter={StaticResource BoolToVisibilityConverter}}">
+                    <TextBlock Text="{Binding ErrorMessage}"
+                               Foreground="#ff6b6b"
+                               FontSize="12"
+                               HorizontalAlignment="Center"/>
+                </Border>
+
+                <!-- Login Button -->
+                <Button Command="{Binding LoginCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}"
+                        Cursor="Hand"
+                        Margin="0,5,0,0">
+                    <Button.Template>
+                        <ControlTemplate TargetType="Button">
+                            <Border x:Name="ButtonBorder" CornerRadius="8" Padding="15,12">
+                                <Border.Background>
+                                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
+                                        <GradientStop Color="#e94560" Offset="0"/>
+                                        <GradientStop Color="#0f3460" Offset="1"/>
+                                    </LinearGradientBrush>
+                                </Border.Background>
+                                <TextBlock Text="{DynamicResource Login_LoginButton}"
+                                           Foreground="White"
+                                           FontSize="15"
+                                           FontWeight="SemiBold"
+                                           HorizontalAlignment="Center"/>
+                            </Border>
+                            <ControlTemplate.Triggers>
+                                <Trigger Property="IsMouseOver" Value="True">
+                                    <Setter TargetName="ButtonBorder" Property="Background">
+                                        <Setter.Value>
+                                            <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
+                                                <GradientStop Color="#ff6b6b" Offset="0"/>
+                                                <GradientStop Color="#1a5276" Offset="1"/>
+                                            </LinearGradientBrush>
+                                        </Setter.Value>
+                                    </Setter>
+                                </Trigger>
+                                <Trigger Property="IsPressed" Value="True">
+                                    <Setter TargetName="ButtonBorder" Property="Background">
+                                        <Setter.Value>
+                                            <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
+                                                <GradientStop Color="#c0392b" Offset="0"/>
+                                                <GradientStop Color="#0a3d62" Offset="1"/>
+                                            </LinearGradientBrush>
+                                        </Setter.Value>
+                                    </Setter>
+                                </Trigger>
+                            </ControlTemplate.Triggers>
+                        </ControlTemplate>
+                    </Button.Template>
+                </Button>
+            </StackPanel>
+        </Grid>
+    </Border>
+</Window>
--- a/src/WPFBeginner/Views/LoginWindow.xaml.cs
+++ b/src/WPFBeginner/Views/LoginWindow.xaml.cs
@@ -0,0 +1,30 @@
+using System.Windows;
+using System.Windows.Input;
+using WPFBeginner.ViewModels;
+
+namespace WPFBeginner.Views;
+
+public partial class LoginWindow : Window
+{
+    public LoginWindow()
+    {
+        InitializeComponent();
+        DataContext = App.GetService<LoginViewModel>();
+    }
+
+    private void TitleBar_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+    {
+        if (e.ClickCount == 1)
+        {
+            DragMove();
+        }
+    }
+
+    private void PasswordBox_PasswordChanged(object sender, RoutedEventArgs e)
+    {
+        if (DataContext is LoginViewModel viewModel)
+        {
+            viewModel.Password = PasswordBox.Password;
+        }
+    }
+}
--- a/src/WPFBeginner/Views/MainWindow.xaml
+++ b/src/WPFBeginner/Views/MainWindow.xaml
@@ -0,0 +1,143 @@
+<Window x:Class="WPFBeginner.Views.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d"
+        Title="{DynamicResource Main_Title}"
+        Height="600" Width="900"
+        MinWidth="700" MinHeight="400"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource WindowBackgroundBrush}">
+
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <!-- Top Bar -->
+        <Border Grid.Row="0" Background="{DynamicResource SecondaryBrush}" Padding="15,10">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+
+                <!-- Search Area -->
+                <StackPanel Grid.Column="0" Orientation="Horizontal">
+                    <TextBox Text="{Binding SearchKeyword, UpdateSourceTrigger=PropertyChanged}"
+                             Style="{DynamicResource DefaultTextBoxStyle}"
+                             Width="250"
+                             VerticalAlignment="Center"
+                             KeyDown="SearchTextBox_KeyDown"/>
+                    <Button Content="{DynamicResource Main_Search}"
+                            Style="{DynamicResource PrimaryButtonStyle}"
+                            Command="{Binding SearchCommand}"
+                            Margin="10,0,0,0"
+                            Padding="20,8"/>
+                </StackPanel>
+
+                <!-- Action Buttons -->
+                <StackPanel Grid.Column="1" Orientation="Horizontal">
+                    <Button Content="{DynamicResource Main_Add}"
+                            Style="{DynamicResource PrimaryButtonStyle}"
+                            Command="{Binding AddMemberCommand}"
+                            Margin="0,0,10,0"/>
+                    <Button Content="{DynamicResource Main_Delete}"
+                            Style="{DynamicResource SecondaryButtonStyle}"
+                            Command="{Binding DeleteMemberCommand}"
+                            Margin="0,0,10,0"/>
+                    <Button Content="{DynamicResource Main_Reset}"
+                            Style="{DynamicResource SecondaryButtonStyle}"
+                            Command="{Binding ResetCommand}"
+                            Margin="0,0,10,0"/>
+                    <Button x:Name="SettingsButton"
+                            Content="{DynamicResource Main_Settings}"
+                            Style="{DynamicResource SecondaryButtonStyle}"
+                            Click="SettingsButton_Click"/>
+                </StackPanel>
+            </Grid>
+        </Border>
+
+        <!-- Main Content -->
+        <Grid Grid.Row="1">
+            <!-- DataGrid -->
+            <DataGrid ItemsSource="{Binding FilteredMembers}"
+                      SelectedItem="{Binding SelectedMember}"
+                      Style="{DynamicResource DefaultDataGridStyle}"
+                      AutoGenerateColumns="False"
+                      IsReadOnly="True"
+                      SelectionMode="Single"
+                      Margin="15">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Header="{DynamicResource Main_Column_Name}"
+                                        Binding="{Binding Name}"
+                                        Width="*"/>
+                    <DataGridTextColumn Header="{DynamicResource Main_Column_Call}"
+                                        Binding="{Binding Call}"
+                                        Width="*"/>
+                    <DataGridTextColumn Header="{DynamicResource Main_Column_Email}"
+                                        Binding="{Binding EMail}"
+                                        Width="2*"/>
+                    <DataGridTextColumn Header="{DynamicResource Main_Column_No}"
+                                        Binding="{Binding No}"
+                                        Width="*"/>
+                </DataGrid.Columns>
+            </DataGrid>
+
+            <!-- Settings Panel (Popup) -->
+            <Popup x:Name="SettingsPopup"
+                   Placement="Bottom"
+                   PlacementTarget="{Binding ElementName=SettingsButton}"
+                   StaysOpen="False"
+                   AllowsTransparency="True">
+                <Border Background="{DynamicResource SecondaryBrush}"
+                        BorderBrush="{DynamicResource BorderBrush}"
+                        BorderThickness="1"
+                        CornerRadius="4"
+                        Padding="15"
+                        Margin="5">
+                    <Border.Effect>
+                        <DropShadowEffect BlurRadius="10" Opacity="0.3"/>
+                    </Border.Effect>
+                    <StackPanel Width="200">
+                        <!-- Language Settings -->
+                        <TextBlock Text="{DynamicResource Settings_Language}"
+                                   Foreground="{DynamicResource TextBrush}"
+                                   FontWeight="SemiBold"
+                                   Margin="0,0,0,10"/>
+                        <RadioButton Content="{DynamicResource Settings_Korean}"
+                                     IsChecked="{Binding IsKorean}"
+                                     Style="{DynamicResource DefaultRadioButtonStyle}"
+                                     GroupName="Language"
+                                     Command="{Binding SetKoreanCommand}"/>
+                        <RadioButton Content="{DynamicResource Settings_English}"
+                                     IsChecked="{Binding IsEnglish}"
+                                     Style="{DynamicResource DefaultRadioButtonStyle}"
+                                     GroupName="Language"
+                                     Command="{Binding SetEnglishCommand}"/>
+
+                        <Separator Margin="0,15" Background="{DynamicResource BorderBrush}"/>
+
+                        <!-- Theme Settings -->
+                        <TextBlock Text="{DynamicResource Settings_Theme}"
+                                   Foreground="{DynamicResource TextBrush}"
+                                   FontWeight="SemiBold"
+                                   Margin="0,0,0,10"/>
+                        <RadioButton Content="{DynamicResource Settings_DefaultTheme}"
+                                     IsChecked="{Binding IsDefaultTheme}"
+                                     Style="{DynamicResource DefaultRadioButtonStyle}"
+                                     GroupName="Theme"
+                                     Command="{Binding SetDefaultThemeCommand}"/>
+                        <RadioButton Content="{DynamicResource Settings_LightTheme}"
+                                     IsChecked="{Binding IsLightTheme}"
+                                     Style="{DynamicResource DefaultRadioButtonStyle}"
+                                     GroupName="Theme"
+                                     Command="{Binding SetLightThemeCommand}"/>
+                    </StackPanel>
+                </Border>
+            </Popup>
+        </Grid>
+    </Grid>
+</Window>
--- a/src/WPFBeginner/Views/MainWindow.xaml.cs
+++ b/src/WPFBeginner/Views/MainWindow.xaml.cs
@@ -0,0 +1,27 @@
+using System.Windows;
+using System.Windows.Input;
+using WPFBeginner.ViewModels;
+
+namespace WPFBeginner.Views;
+
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+        DataContext = App.GetService<MainViewModel>();
+    }
+
+    private void SettingsButton_Click(object sender, RoutedEventArgs e)
+    {
+        SettingsPopup.IsOpen = !SettingsPopup.IsOpen;
+    }
+
+    private void SearchTextBox_KeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter && DataContext is MainViewModel viewModel)
+        {
+            viewModel.SearchCommand.Execute(null);
+        }
+    }
+}
--- a/src/WPFBeginner/Views/RegistWindow.xaml
+++ b/src/WPFBeginner/Views/RegistWindow.xaml
@@ -0,0 +1,183 @@
+<Window x:Class="WPFBeginner.Views.RegistWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:controls="clr-namespace:WPFBeginner.Controls"
+        mc:Ignorable="d"
+        Title="{DynamicResource Regist_Title}"
+        Height="450" Width="400"
+        WindowStartupLocation="CenterScreen"
+        WindowStyle="None"
+        AllowsTransparency="True"
+        Background="Transparent"
+        ResizeMode="CanResize">
+
+    <Border Background="{DynamicResource WindowBackgroundBrush}"
+            CornerRadius="8"
+            BorderBrush="{DynamicResource BorderBrush}"
+            BorderThickness="1">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="*"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+
+            <!-- Custom Title Bar -->
+            <Grid Grid.Row="0" Background="{DynamicResource SecondaryBrush}" MouseLeftButtonDown="TitleBar_MouseLeftButtonDown">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="Auto"/>
+                    <ColumnDefinition Width="Auto"/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+
+                <TextBlock Text="{DynamicResource Regist_Title}"
+                           Foreground="{DynamicResource TextBrush}"
+                           VerticalAlignment="Center"
+                           Margin="15,10"
+                           FontSize="14"
+                           FontWeight="SemiBold"/>
+
+                <!-- Minimize Button -->
+                <Button Grid.Column="1"
+                        Content="─"
+                        Width="40" Height="35"
+                        Background="Transparent"
+                        Foreground="{DynamicResource TextBrush}"
+                        BorderThickness="0"
+                        FontSize="12"
+                        Command="{Binding MinimizeCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}">
+                    <Button.Style>
+                        <Style TargetType="Button">
+                            <Setter Property="Template">
+                                <Setter.Value>
+                                    <ControlTemplate TargetType="Button">
+                                        <Border Background="{TemplateBinding Background}">
+                                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                                        </Border>
+                                        <ControlTemplate.Triggers>
+                                            <Trigger Property="IsMouseOver" Value="True">
+                                                <Setter Property="Background" Value="#4E4E52"/>
+                                            </Trigger>
+                                        </ControlTemplate.Triggers>
+                                    </ControlTemplate>
+                                </Setter.Value>
+                            </Setter>
+                        </Style>
+                    </Button.Style>
+                </Button>
+
+                <!-- Maximize Button -->
+                <Button Grid.Column="2"
+                        Content="☐"
+                        Width="40" Height="35"
+                        Background="Transparent"
+                        Foreground="{DynamicResource TextBrush}"
+                        BorderThickness="0"
+                        FontSize="12"
+                        Command="{Binding MaximizeCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}">
+                    <Button.Style>
+                        <Style TargetType="Button">
+                            <Setter Property="Template">
+                                <Setter.Value>
+                                    <ControlTemplate TargetType="Button">
+                                        <Border Background="{TemplateBinding Background}">
+                                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                                        </Border>
+                                        <ControlTemplate.Triggers>
+                                            <Trigger Property="IsMouseOver" Value="True">
+                                                <Setter Property="Background" Value="#4E4E52"/>
+                                            </Trigger>
+                                        </ControlTemplate.Triggers>
+                                    </ControlTemplate>
+                                </Setter.Value>
+                            </Setter>
+                        </Style>
+                    </Button.Style>
+                </Button>
+
+                <!-- Close Button -->
+                <Button Grid.Column="3"
+                        Content="✕"
+                        Width="40" Height="35"
+                        Background="Transparent"
+                        Foreground="{DynamicResource TextBrush}"
+                        BorderThickness="0"
+                        FontSize="14"
+                        Command="{Binding CloseCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}">
+                    <Button.Style>
+                        <Style TargetType="Button">
+                            <Setter Property="Template">
+                                <Setter.Value>
+                                    <ControlTemplate TargetType="Button">
+                                        <Border Background="{TemplateBinding Background}">
+                                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                                        </Border>
+                                        <ControlTemplate.Triggers>
+                                            <Trigger Property="IsMouseOver" Value="True">
+                                                <Setter Property="Background" Value="#E81123"/>
+                                            </Trigger>
+                                        </ControlTemplate.Triggers>
+                                    </ControlTemplate>
+                                </Setter.Value>
+                            </Setter>
+                        </Style>
+                    </Button.Style>
+                </Button>
+            </Grid>
+
+            <!-- Content -->
+            <StackPanel Grid.Row="1" Margin="25,20">
+                <!-- Name Input -->
+                <controls:InputPanel LabelText="{DynamicResource Regist_Name}"
+                                     Text="{Binding Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                                     IsRequired="True"
+                                     Margin="0,0,0,15"/>
+
+                <!-- Phone Input -->
+                <controls:InputPanel LabelText="{DynamicResource Regist_Call}"
+                                     Text="{Binding Call, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                                     Margin="0,0,0,15"/>
+
+                <!-- Email Input -->
+                <controls:InputPanel LabelText="{DynamicResource Regist_Email}"
+                                     Text="{Binding EMail, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                                     IsRequired="True"
+                                     Margin="0,0,0,15"/>
+
+                <!-- Employee No Input -->
+                <controls:InputPanel LabelText="{DynamicResource Regist_No}"
+                                     Text="{Binding No, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                                     Margin="0,0,0,10"/>
+
+                <!-- Error Message -->
+                <TextBlock Text="{Binding ErrorMessage}"
+                           Foreground="{DynamicResource ErrorBrush}"
+                           Visibility="{Binding HasError, Converter={StaticResource BoolToVisibilityConverter}}"
+                           HorizontalAlignment="Center"
+                           Margin="0,10,0,0"
+                           FontSize="12"/>
+            </StackPanel>
+
+            <!-- Buttons -->
+            <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right" Margin="25,0,25,20">
+                <Button Content="{DynamicResource Regist_Cancel}"
+                        Style="{DynamicResource SecondaryButtonStyle}"
+                        Command="{Binding CancelCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}"
+                        Width="80"
+                        Margin="0,0,10,0"/>
+                <Button Content="{DynamicResource Regist_Register}"
+                        Style="{DynamicResource PrimaryButtonStyle}"
+                        Command="{Binding RegisterCommand}"
+                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}"
+                        Width="80"/>
+            </StackPanel>
+        </Grid>
+    </Border>
+</Window>
--- a/src/WPFBeginner/Views/RegistWindow.xaml.cs
+++ b/src/WPFBeginner/Views/RegistWindow.xaml.cs
@@ -0,0 +1,32 @@
+using System.Windows;
+using System.Windows.Input;
+using WPFBeginner.Models;
+using WPFBeginner.ViewModels;
+
+namespace WPFBeginner.Views;
+
+public partial class RegistWindow : Window
+{
+    public event EventHandler<Member>? MemberAdded;
+
+    public RegistWindow()
+    {
+        InitializeComponent();
+        var viewModel = App.GetService<RegistViewModel>();
+        viewModel.MemberAdded += OnMemberAdded;
+        DataContext = viewModel;
+    }
+
+    private void OnMemberAdded(object? sender, Member member)
+    {
+        MemberAdded?.Invoke(this, member);
+    }
+
+    private void TitleBar_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+    {
+        if (e.ClickCount == 1)
+        {
+            DragMove();
+        }
+    }
+}
--- a/src/WPFBeginner/WPFBeginner.csproj
+++ b/src/WPFBeginner/WPFBeginner.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+    <ApplicationIcon></ApplicationIcon>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="appsettings.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>
--- a/src/WPFEduSolution/WPFBeginner/appsettings.json
+++ b/src/WPFEduSolution/WPFBeginner/appsettings.json
--- a/src/WPFEduSolution/WPFBeginner/App.xaml
+++ b/src/WPFEduSolution/WPFBeginner/App.xaml
@@ -1,20 +0,0 @@
-<Application x:Class="WPFBeginner.App"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:service="clr-namespace:WPFBeginner.Services"
-             xmlns:conv="clr-namespace:WPFBeginner.Converters"
-             Startup="Application_Startup">
-    <Application.Resources>
-        <ResourceDictionary>
-            <service:ViewModelLocator x:Key="ViewModelLocator"/>
-            <conv:InverseBoolConverter x:Key="InverseBoolConverter"/>
-            
-            <ResourceDictionary.MergedDictionaries>
-                <ResourceDictionary Source="pack://application:,,,/Themes/Styles/Buttons.xaml" />
-                <ResourceDictionary Source="pack://application:,,,/Themes/Colors/DefaultTheme.xaml" />
-                <ResourceDictionary Source="pack://application:,,,/Themes/Cultures/ko-KR.xaml" />
-                <ResourceDictionary Source="pack://application:,,,/Resources/Images/DrawingImages.xaml" />
-            </ResourceDictionary.MergedDictionaries>
-        </ResourceDictionary>
-    </Application.Resources>
-</Application>
--- a/src/WPFEduSolution/WPFBeginner/App.xaml.cs
+++ b/src/WPFEduSolution/WPFBeginner/App.xaml.cs
@@ -1,104 +0,0 @@
-using CommunityToolkit.Mvvm.DependencyInjection;
-using Microsoft.Extensions.DependencyInjection;
-using System.IO;
-using System.Text.Json;
-using System.Windows;
-using WPFBeginner.Configurations;
-using WPFBeginner.Exceptions;
-using WPFBeginner.Services;
-using WPFBeginner.ViewModels;
-using WPFBeginner.Views;
-
-namespace WPFBeginner
-{
-    /// <summary>
-    /// Interaction logic for App.xaml
-    /// </summary>
-    public partial class App : Application
-    {
-        private readonly static Dictionary<string, ResourceDictionary> _languages = new Dictionary<string, ResourceDictionary>();
-        private static ResourceDictionary _currentLanguage;
-
-        private readonly static Dictionary<string, ResourceDictionary> _themes = new Dictionary<string, ResourceDictionary>();
-        private static ResourceDictionary _currentTheme;
-
-        public static AppSettings Config { get; private set; }
-
-        private void Application_Startup(object sender, StartupEventArgs e)
-        {
-            InitializeService();
-            var main = new MainWindow();
-            App.Current.MainWindow = main;
-            try
-            {
-                Login();
-
-                Application.Current.ShutdownMode = ShutdownMode.OnMainWindowClose;
-                App.Current.MainWindow.Show();
-            }
-            catch (Exception ex)
-            {
-                App.Current.MainWindow.Close();
-                Environment.Exit(0);
-            }
-        }
-
-        private void UnhandledExceptionHandle(object e)
-        {
-            if (e is UnhandledExceptionEventArgs uee && uee.ExceptionObject is LoginFailedException)
-            {
-
-            }
-        }
-
-        private static void InitializeService()
-        {
-            Config = JsonSerializer.Deserialize<AppSettings>(File.ReadAllText("appsettings.json"));
-
-            _languages.Add("ko-KR", ResourceExplorer.GetLanguageResourceDic("ko-KR"));
-            _languages.Add("en-US", ResourceExplorer.GetLanguageResourceDic("en-US"));
-            SetLanguage(Config.Language);
-
-            _themes.Add("DefaultTheme", ResourceExplorer.GetThemeResourceDic("DefaultTheme"));
-            _themes.Add("LightTheme", ResourceExplorer.GetThemeResourceDic("LightTheme"));
-            SetTheme(Config.Theme);
-
-            Config.LanguageChanged += (s, e) => SetLanguage(e.New);
-            Config.ThemeChanged += (s, e) => SetTheme(e.New);
-
-            Ioc.Default.ConfigureServices(
-                new ServiceCollection()
-                .AddSingleton(new MainWindowViewModel())
-                .BuildServiceProvider());
-        }
-
-        private static void SetTheme(string code)
-        {
-            if (_currentTheme != null)
-                App.Current.Resources.MergedDictionaries.Remove(_currentTheme);
-
-            _currentTheme = ResourceExplorer.GetThemeResourceDic(code);
-            App.Current.Resources.MergedDictionaries.Add(_currentTheme);
-        }
-
-        private static void SetLanguage(string code)
-        {
-            if (_currentLanguage != null)
-                App.Current.Resources.MergedDictionaries.Remove(_currentLanguage);
-
-            _currentLanguage = ResourceExplorer.GetLanguageResourceDic(code);
-            App.Current.Resources.MergedDictionaries.Add(_currentLanguage);
-        }
-
-        private static void Login()
-        {
-            var login = new LoginWindow();
-            var isSuccess = login.ShowDialog();
-
-            if (isSuccess != true)
-                throw new LoginFailedException();
-        }
-    }
-
-}
-
--- a/src/WPFEduSolution/WPFBeginner/Behaviors/WindowBehavior.cs
+++ b/src/WPFEduSolution/WPFBeginner/Behaviors/WindowBehavior.cs
@@ -1,279 +0,0 @@
-using System.Runtime.InteropServices;
-using System.Windows;
-using System.Windows.Interop;
-
-namespace WPFBeginner.Behaviors
-{
-    public class WindowBehavior
-    {
-        #region Win32 imports
-
-        private const int GWL_STYLE = -16;
-        private const int WS_SYSMENU = 0x80000;
-        private const int WS_MAXIMIZEBOX = 0x80000;
-        private const int WS_MINIMIZEBOX = 0x80000;
-
-        [DllImport("user32.dll", SetLastError = true)]
-        private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
-        [DllImport("user32.dll")]
-        private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
-
-        #endregion
-
-        private static readonly Type OwnerType = typeof(WindowBehavior);
-
-        #region HideCloseButton (attached property)
-
-        private static readonly RoutedEventHandler HideCloseButtonWhenLoadedDelegate = (sender, args) =>
-        {
-            if (sender is Window == false)
-                return;
-
-            var w = (Window)sender;
-            HideCloseButton(w);
-            w.Loaded -= HideCloseButtonWhenLoadedDelegate;
-        };
-
-        private static readonly RoutedEventHandler ShowCloseButtonWhenLoadedDelegate = (sender, args) =>
-        {
-            if (sender is Window == false)
-                return;
-
-            var w = (Window)sender;
-            ShowCloseButton(w);
-            w.Loaded -= ShowCloseButtonWhenLoadedDelegate;
-        };
-
-        public static readonly DependencyProperty HideCloseButtonProperty =
-            DependencyProperty.RegisterAttached("HideCloseButton", typeof(bool), OwnerType,
-                new FrameworkPropertyMetadata(false, new PropertyChangedCallback(HideCloseButtonChangedCallback)));
-
-        [AttachedPropertyBrowsableForType(typeof(Window))]
-        public static bool GetHideCloseButton(Window obj) => (bool)obj.GetValue(HideCloseButtonProperty);
-
-        [AttachedPropertyBrowsableForType(typeof(Window))]
-        public static void SetHideCloseButton(Window obj, bool value) => obj.SetValue(HideCloseButtonProperty, value);
-
-        private static void HideCloseButtonChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        {
-            var window = d as Window;
-            if (window == null) return;
-
-            var hideCloseButton = (bool)e.NewValue;
-            if (hideCloseButton && !GetIsHiddenCloseButton(window))
-            {
-                if (!window.IsLoaded)
-                    window.Loaded += HideCloseButtonWhenLoadedDelegate;
-                else
-                    HideCloseButton(window);
-
-                SetIsHiddenCloseButton(window, true);
-            }
-            else if (!hideCloseButton && GetIsHiddenCloseButton(window))
-            {
-                if (!window.IsLoaded)
-                    window.Loaded -= ShowCloseButtonWhenLoadedDelegate;
-                else
-                    ShowCloseButton(window);
-
-                SetIsHiddenCloseButton(window, false);
-            }
-        }
-
-
-
-        private static void HideCloseButton(Window w)
-        {
-            var hwnd = new WindowInteropHelper(w).Handle;
-            SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_SYSMENU);
-        }
-
-        private static void ShowCloseButton(Window w)
-        {
-            var hwnd = new WindowInteropHelper(w).Handle;
-            SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) | WS_SYSMENU);
-        }
-
-        #endregion
-
-        #region IsHiddenCloseButton (readonly attached property)
-
-        private static readonly DependencyPropertyKey IsHiddenCloseButtonKey =
-            DependencyProperty.RegisterAttachedReadOnly("IsHiddenCloseButton", typeof(bool), OwnerType, new FrameworkPropertyMetadata(false));
-
-        public static readonly DependencyProperty IsHiddenCloseButtonProperty = IsHiddenCloseButtonKey.DependencyProperty;
-
-        [AttachedPropertyBrowsableForType(typeof(Window))]
-        public static bool GetIsHiddenCloseButton(Window obj) => (bool)obj.GetValue(IsHiddenCloseButtonProperty);
-
-        private static void SetIsHiddenCloseButton(Window obj, bool value) => obj.SetValue(IsHiddenCloseButtonKey, value);
-
-        #endregion
-
-        //#region HideMinimizeButton
-
-        //private static readonly RoutedEventHandler HideMinimizeButtonWhenLoadedDelegate = (sender, args) => {
-        //    if (sender is Window == false)
-        //        return;
-
-        //    var w = (Window)sender;
-        //    HideMinimizeButton(w);
-        //    w.Loaded -= HideMinimizeButtonWhenLoadedDelegate;
-        //};
-
-        //private static readonly RoutedEventHandler ShowMinimizeButtonWhenLoadedDelegate = (sender, args) => {
-        //    if (sender is Window == false)
-        //        return;
-
-        //    var w = (Window)sender;
-        //    ShowMinimizeButton(w);
-        //    w.Loaded -= ShowMinimizeButtonWhenLoadedDelegate;
-        //};
-
-        //public static readonly DependencyProperty HideMinimizeButtonProperty =
-        //    DependencyProperty.RegisterAttached("HideMinimizeButton", typeof(bool), OwnerType,
-        //        new FrameworkPropertyMetadata(false, new PropertyChangedCallback(HideMinimizeButtonChangedCallback)));
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static bool GetHideMinimizeButton(Window obj) => (bool)obj.GetValue(HideCloseButtonProperty);
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static void SetHideMinimizeButton(Window obj, bool value) => obj.SetValue(HideCloseButtonProperty, value);
-
-        //private static void HideMinimizeButtonChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        //{
-        //    var window = d as Window;
-        //    if (window == null) return;
-
-        //    var hideCloseButton = (bool)e.NewValue;
-        //    if (hideCloseButton && !GetIsHiddenMinimizeButton(window))
-        //    {
-        //        if (!window.IsLoaded)
-        //            window.Loaded += HideMinimizeButtonWhenLoadedDelegate;
-        //        else
-        //            HideMinimizeButton(window);
-
-        //        SetIsHiddenMinimizeButton(window, true);
-        //    }
-        //    else if (!hideCloseButton && GetIsHiddenMinimizeButton(window))
-        //    {
-        //        if (!window.IsLoaded)
-        //            window.Loaded -= ShowMinimizeButtonWhenLoadedDelegate;
-        //        else
-        //            ShowMinimizeButton(window);
-
-        //        SetIsHiddenMinimizeButton(window, false);
-        //    }
-        //}
-
-        //private static void HideMinimizeButton(Window w)
-        //{
-        //    var hwnd = new WindowInteropHelper(w).Handle;
-        //    SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_MINIMIZEBOX);
-        //}
-
-        //private static void ShowMinimizeButton(Window w)
-        //{
-        //    var hwnd = new WindowInteropHelper(w).Handle;
-        //    SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) | WS_MINIMIZEBOX);
-        //}
-
-        //#endregion
-
-        //#region IsHiddenMinimizeButton (readonly attached property)
-        //private static readonly DependencyPropertyKey IsHiddenMinimizeButtonKey =
-        //    DependencyProperty.RegisterAttachedReadOnly("IsHiddenMinimizeButton", typeof(bool), OwnerType, new FrameworkPropertyMetadata(false));
-
-        //public static readonly DependencyProperty IsHiddenMinimizeButtonProperty = IsHiddenMinimizeButtonKey.DependencyProperty;
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static bool GetIsHiddenMinimizeButton(Window obj) => (bool)obj.GetValue(IsHiddenMinimizeButtonProperty);
-
-        //private static void SetIsHiddenMinimizeButton(Window obj, bool value) => obj.SetValue(IsHiddenMinimizeButtonProperty, value);
-        //#endregion
-
-        //#region HideMaximizeButton
-
-        //private static readonly RoutedEventHandler HideMaximizeButtonWhenLoadedDelegate = (sender, args) => {
-        //    if (sender is Window == false)
-        //        return;
-
-        //    var w = (Window)sender;
-        //    HideMaximizeButton(w);
-        //    w.Loaded -= HideMaximizeButtonWhenLoadedDelegate;
-        //};
-
-        //private static readonly RoutedEventHandler ShowMaximizeButtonWhenLoadedDelegate = (sender, args) => {
-        //    if (sender is Window == false)
-        //        return;
-
-        //    var w = (Window)sender;
-        //    ShowMaximizeButton(w);
-        //    w.Loaded -= ShowMaximizeButtonWhenLoadedDelegate;
-        //};
-
-        //public static readonly DependencyProperty HideMaximizeButtonProperty =
-        //    DependencyProperty.RegisterAttached("HideMaximizeButton", typeof(bool), OwnerType,
-        //        new FrameworkPropertyMetadata(false, new PropertyChangedCallback(HideMaximizeButtonChangedCallback)));
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static bool GetHideMaximizeButton(Window obj) => (bool)obj.GetValue(HideCloseButtonProperty);
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static void SetHideMaximizeButton(Window obj, bool value) => obj.SetValue(HideCloseButtonProperty, value);
-
-        //private static void HideMaximizeButtonChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        //{
-        //    var window = d as Window;
-        //    if (window == null) return;
-
-        //    var hideCloseButton = (bool)e.NewValue;
-        //    if (hideCloseButton && !GetIsHiddenMaximizeButton(window))
-        //    {
-        //        if (!window.IsLoaded)
-        //            window.Loaded += HideMaximizeButtonWhenLoadedDelegate;
-        //        else
-        //            HideMaximizeButton(window);
-
-        //        SetIsHiddenMaximizeButton(window, true);
-        //    }
-        //    else if (!hideCloseButton && GetIsHiddenMaximizeButton(window))
-        //    {
-        //        if (!window.IsLoaded)
-        //            window.Loaded -= ShowMaximizeButtonWhenLoadedDelegate;
-        //        else
-        //            ShowMaximizeButton(window);
-
-        //        SetIsHiddenMaximizeButton(window, false);
-        //    }
-        //}
-
-        //private static void HideMaximizeButton(Window w)
-        //{
-        //    var hwnd = new WindowInteropHelper(w).Handle;
-        //    SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_MINIMIZEBOX);
-        //}
-
-        //private static void ShowMaximizeButton(Window w)
-        //{
-        //    var hwnd = new WindowInteropHelper(w).Handle;
-        //    SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) | WS_MINIMIZEBOX);
-        //}
-
-        //#endregion
-
-        //#region IsHiddenMaximizeButton (readonly attached property)
-        //private static readonly DependencyPropertyKey IsHiddenMaximizeButtonKey =
-        //    DependencyProperty.RegisterAttachedReadOnly("IsHiddenMaximizeButton", typeof(bool), OwnerType, new FrameworkPropertyMetadata(false));
-
-        //public static readonly DependencyProperty IsHiddenMaximizeButtonProperty = IsHiddenMaximizeButtonKey.DependencyProperty;
-
-        //[AttachedPropertyBrowsableForType(typeof(Window))]
-        //public static bool GetIsHiddenMaximizeButton(Window obj) => (bool)obj.GetValue(IsHiddenMaximizeButtonProperty);
-
-        //private static void SetIsHiddenMaximizeButton(Window obj, bool value) => obj.SetValue(IsHiddenMaximizeButtonProperty, value);
-        //#endregion
-
-
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Configurations/AppSettings.cs
+++ b/src/WPFEduSolution/WPFBeginner/Configurations/AppSettings.cs
@@ -1,69 +0,0 @@
-using System.Text.Json.Serialization;
-using WPFBeginner.Models;
-
-namespace WPFBeginner.Configurations
-{
-    public class AppSettings
-    {
-        public EventHandler<StringChangedEventArg> LanguageChanged;
-        public EventHandler<StringChangedEventArg> ThemeChanged;
-
-        [JsonPropertyName("Login")]
-        public LoginInfo Login { get; set; }
-
-        private string language;
-        [JsonPropertyName("Language")]
-        public string Language
-        {
-            get => language;
-            set
-            {
-                var eventArg = new StringChangedEventArg()
-                {
-                    Old = language,
-                    New = value
-                };
-
-                language = value;
-
-                if (eventArg.NotChanged)
-                    return;
-
-                LanguageChanged?.Invoke(null, eventArg);
-            }
-        }
-
-        private string theme;
-        [JsonPropertyName("Theme")]
-        public string Theme
-        {
-            get => theme;
-            set
-            {
-                var eventArg = new StringChangedEventArg()
-                {
-                    Old = theme,
-                    New = value
-                };
-
-                theme = value;
-
-                if (eventArg.NotChanged)
-                    return;
-
-                ThemeChanged?.Invoke(null, eventArg);
-            }
-        }
-
-        [JsonPropertyName("DefaultMembers")]
-        public List<Member> Members { get; set; }
-    }
-
-    public class StringChangedEventArg : EventArgs
-    {
-        public string Old { get; set; }
-        public string New { get; set; }
-
-        public bool NotChanged => Old?.Equals(New, StringComparison.OrdinalIgnoreCase) ?? true;
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Configurations/LoginInfo.cs
+++ b/src/WPFEduSolution/WPFBeginner/Configurations/LoginInfo.cs
@@ -1,12 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace WPFBeginner.Configurations
-{
-    public class LoginInfo
-    {
-        [JsonPropertyName("User")]
-        public string User { get; set; }
-
-        public string Password { get; set; }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Controls/MemberInputPanel.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Controls/MemberInputPanel.xaml
@@ -1,51 +0,0 @@
-<UserControl x:Class="WPFBeginner.Controls.MemberInputPanel"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
-             mc:Ignorable="d" Name="root"
-             d:DesignHeight="450" d:DesignWidth="800">
-    
-    <UserControl.Resources>
-        <Style x:Key="LabelTitle" TargetType="Label">
-            <Setter Property="FontSize" Value="12"/>
-            <Setter Property="FontFamily" Value="Yu Gothic UI"/>
-            <Setter Property="FontWeight" Value="Bold"/>
-            <Setter Property="Padding" Value="10 0"/>
-            <Setter Property="HorizontalAlignment" Value="Right"/>
-            <Setter Property="VerticalAlignment" Value="Center"/>
-            <Setter Property="Foreground" Value="{DynamicResource Colors.TextBox.Foreground}"/>
-        </Style>
-        <Style x:Key="InputBox" TargetType="TextBox">
-            <Setter Property="VerticalAlignment" Value="Center"/>
-            <Setter Property="VerticalContentAlignment" Value="Center"/>
-            <Setter Property="Padding" Value="5 0"/>
-            <Setter Property="Height" Value="25"/>
-            <Setter Property="Foreground" Value="{DynamicResource Colors.TextBox.Foreground}"/>
-            <Setter Property="Background" Value="{DynamicResource Colors.TextBox.Background}"/>
-            <Setter Property="BorderBrush" Value="#FF424242"/>
-        </Style>
-    </UserControl.Resources>
-    <Grid >
-        <Grid.RowDefinitions>
-            <RowDefinition Height="*"/>
-            <RowDefinition Height="*"/>
-            <RowDefinition Height="*"/>
-            <RowDefinition Height="*"/>
-        </Grid.RowDefinitions>
-        <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="Auto"/>
-            <ColumnDefinition Width="*"/>
-        </Grid.ColumnDefinitions>
-
-        <Label Grid.Row="0" Style="{StaticResource LabelTitle}" Content="{DynamicResource Cultures.MainWindow.Label.Name}"/>
-        <Label Grid.Row="1" Style="{StaticResource LabelTitle}" Content="{DynamicResource Cultures.MainWindow.Label.Call}" />
-        <Label Grid.Row="2" Style="{StaticResource LabelTitle}" Content="{DynamicResource Cultures.MainWindow.Label.No}"/>
-        <Label Grid.Row="3" Style="{StaticResource LabelTitle}" Content="{DynamicResource Cultures.MainWindow.Label.Mail}"/>
-
-        <TextBox Grid.Row="0" Grid.Column="1" Style="{StaticResource InputBox}" Text="{Binding ElementName=root, Path=MemberName}"/>
-        <TextBox Grid.Row="1" Grid.Column="1" Style="{StaticResource InputBox}" Text="{Binding ElementName=root, Path=Call}"/>
-        <TextBox Grid.Row="2" Grid.Column="1" Style="{StaticResource InputBox}" Text="{Binding ElementName=root, Path=EmployeeNo}"/>
-        <TextBox Grid.Row="3" Grid.Column="1" Style="{StaticResource InputBox}" Text="{Binding ElementName=root, Path=Email}"/>
-    </Grid>
-</UserControl>
--- a/src/WPFEduSolution/WPFBeginner/Controls/MemberInputPanel.xaml.cs
+++ b/src/WPFEduSolution/WPFBeginner/Controls/MemberInputPanel.xaml.cs
@@ -1,52 +0,0 @@
-using System.Windows;
-using System.Windows.Controls;
-
-namespace WPFBeginner.Controls
-{
-    /// <summary>
-    /// MemberInputPanel.xaml에 대한 상호 작용 논리
-    /// </summary>
-    public partial class MemberInputPanel : UserControl
-    {
-        public static readonly DependencyProperty MemberNameProperty =
-            DependencyProperty.Register(nameof(MemberName), typeof(string), typeof(MemberInputPanel), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = true });
-
-        public string MemberName
-        {
-            get => (string)GetValue(MemberNameProperty);
-            set => SetValue(MemberNameProperty, value);
-        }
-
-        public static readonly DependencyProperty EmployeeNoProperty =
-            DependencyProperty.Register(nameof(EmployeeNo), typeof(string), typeof(MemberInputPanel), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = true });
-
-        public string EmployeeNo
-        {
-            get => (string)GetValue(EmployeeNoProperty);
-            set => SetValue(EmployeeNoProperty, value);
-        }
-
-        public static readonly DependencyProperty CallProperty =
-            DependencyProperty.Register(nameof(Call), typeof(string), typeof(MemberInputPanel), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = true });
-
-        public string Call
-        {
-            get => (string)GetValue(CallProperty);
-            set => SetValue(CallProperty, value);
-        }
-
-        public static readonly DependencyProperty EmailProperty =
-            DependencyProperty.Register(nameof(Email), typeof(string), typeof(MemberInputPanel), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = true });
-
-        public string Email
-        {
-            get => (string)GetValue(EmailProperty);
-            set => SetValue(EmailProperty, value);
-        }
-
-        public MemberInputPanel()
-        {
-            InitializeComponent();
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Converters/BaseConverter.cs
+++ b/src/WPFEduSolution/WPFBeginner/Converters/BaseConverter.cs
@@ -1,14 +0,0 @@
-using System.Windows.Markup;
-
-namespace WPFBeginner.Converters
-{
-    public abstract class BaseConverter : MarkupExtension
-    {
-        protected BaseConverter() { }
-
-        public override object ProvideValue(IServiceProvider serviceProvider)
-        {
-            return this;
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Converters/InverseBoolConverter.cs
+++ b/src/WPFEduSolution/WPFBeginner/Converters/InverseBoolConverter.cs
@@ -1,20 +0,0 @@
-using System.Windows.Data;
-
-namespace WPFBeginner.Converters
-{
-    [ValueConversion(typeof(bool), typeof(bool))]
-    public class InverseBoolConverter : BaseConverter, IValueConverter
-    {
-        public InverseBoolConverter() { }
-
-        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
-        {
-            return !(bool)value;
-        }
-
-        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
-        {
-            return !(bool)value;
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Exceptions/LoginFailedException.cs
+++ b/src/WPFEduSolution/WPFBeginner/Exceptions/LoginFailedException.cs
@@ -1,10 +0,0 @@
-namespace WPFBeginner.Exceptions
-{
-    internal class LoginFailedException : Exception
-    {
-        public LoginFailedException() : base()
-        {
-
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Models/Member.cs
+++ b/src/WPFEduSolution/WPFBeginner/Models/Member.cs
@@ -1,27 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace WPFBeginner.Models
-{
-    public class Member
-    {
-        [JsonPropertyName("Name")]
-        public string Name { get; set; }
-        [JsonPropertyName("Call")]
-        public string Call { get; set; }
-        [JsonPropertyName("EMail")]
-        public string EMail { get; set; }
-        [JsonPropertyName("No")]
-        public string EmployeeNo { get; set; }
-
-        public static Member Create(string name, string call, string email, string employeeNo)
-        {
-            return new Member()
-            {
-                Name = name,
-                Call = call,
-                EMail = email,
-                EmployeeNo = employeeNo
-            };
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Resources/Images/DrawingImages.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Resources/Images/DrawingImages.xaml
@@ -1,36 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <DrawingImage x:Key="Images.OptionsMenu.Setting.Normal">
-        <DrawingImage.Drawing>
-            <DrawingGroup ClipGeometry="M0,0 V24 H24 V0 H0 Z">
-                <GeometryDrawing Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Normal}" Geometry="F0 M24,24z M0,0z M10.1,1.3L10.1,1.1 12.7,1.1 12.7,1.3 13,2.6 13.2,3.7C14.2,3.9,15.1,4.3,15.9,4.8L16,4.8 17.7,3.5 17.8,3.4 18.1,3.4 18.9,4.2 19.7,5 19.7,5.3 19.6,5.4 19,6.2 18.4,7.1C18.9,7.9,19.3,8.8,19.6,9.8L19.6,9.9 20.5,10 20.7,10 21.7,10.2 21.9,10.2 21.9,12.8 21.7,12.8 20.7,13 19.6,13.2C19.4,14.2,19,15.1,18.5,15.9L19.8,17.6C19.8,17.6,19.8,17.7,19.9,17.7L19.9,18 19.1,18.8 18.3,19.6 18,19.6 17.9,19.5 16,18.4C15.2,18.9,14.2,19.3,13.3,19.5L13.3,19.6 13,21.7 13,21.9 10.4,21.9 10.4,21.7 10.2,20.5 10,19.4C9.1,19.2,8.2,18.8,7.4,18.3L7,18.4 5.3,19.7 5.2,19.8 4.9,19.8 4.1,19 3.3,18.2 3.3,17.9 3.4,17.8 4.2,16.7 4.6,16 4.8,15.7C4.4,15,4,14.2,3.8,13.3L3.4,13.2 1.4,12.9 1.2,12.9 1.2,10.3 1.4,10.3 3.5,9.99999999999999 3.8,9.9C4,8.99999999999999,4.3,8.2,4.8,7.4L4.1,6.4 3.3,5.4 3.2,5.3 3.2,5 4,4.1 4.8,3.3 5.1,3.3 5.2,3.4 7,4.7 7.2,4.9C8,4.3,8.8,3.9,9.8,3.7L10,2.6 10.1,1.3z M13.9,1.3L14.1,2.8C14.7,3,15.3,3.2,15.8,3.5L17,2.6C17.1,2.5 17.4,2.3 17.7,2.2 18,2.1 18.4,2.2 18.8,2.5L19.6,3.3 20.4,4.1C20.7,4.4 20.8,4.8 20.7,5.2 20.6,5.5 20.5,5.7 20.3,5.9L19.5,7C19.8,7.6,20.1,8.2,20.3,8.8L21.7,9C21.9,9 22.2,9.1 22.4,9.2 22.7,9.4 22.9,9.7 22.9,10.2L22.9,12.6C22.9,13.1 22.7,13.4 22.4,13.6 22.2,13.8 21.9,13.8 21.7,13.8L20.3,14C20.1,14.6,19.9,15.2,19.6,15.7L20.4,16.8C20.5,16.9 20.7,17.2 20.8,17.5 20.9,17.8 20.8,18.2 20.5,18.6L19.7,19.4 18.9,20.2C18.6,20.5 18.2,20.6 17.8,20.5 17.5,20.4 17.3,20.3 17.1,20.1L15.9,19.2C15.3,19.5,14.7,19.7,14.1,19.9L13.9,21.4C13.9,21.6 13.8,21.9 13.7,22.1 13.5,22.4 13.2,22.6 12.7,22.6L10.3,22.6C9.8,22.6 9.5,22.4 9.3,22.1 9.1,21.9 9.1,21.6 9.1,21.4L8.9,19.8C8.3,19.6,7.8,19.4,7.2,19.1L5.9,20.1C5.8,20.2 5.5,20.4 5.2,20.5 4.9,20.6 4.5,20.5 4.1,20.2L3.3,19.4 2.5,18.6C2.2,18.3 2.1,17.9 2.2,17.5 2.3,17.2 2.4,17 2.6,16.8L3.6,15.4C3.4,14.9,3.2,14.5,3,14L1.2,14C1,14 0.7,13.9 0.5,13.8 0.2,13.6 0,13.3 0,12.8L0,10.4C0,9.9 0.2,9.6 0.5,9.4 0.8,9.2 1,9.2 1.2,9.2L3,8.9 3.6,7.4 2.5,6C2.4,5.8 2.2,5.6 2.2,5.3 2.1,5 2.2,4.6 2.5,4.2L3.3,3.4 4.1,2.6C4.4,2.3 4.8,2.2 5.2,2.3 5.5,2.4 5.7,2.5 5.9,2.7L7.2,3.7C7.7,3.4,8.2,3.2,8.8,3L9,1.4C9,1.2 9.1,0.9 9.2,0.7 9.5,0.3 9.8,0 10.3,0L12.7,0C13.2,0 13.5,0.2 13.7,0.5 13.8,0.8 13.9,1.1 13.9,1.3z" />
-                <GeometryDrawing>
-                    <GeometryDrawing.Pen>
-                        <Pen Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Normal}" Thickness="1" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter" />
-                    </GeometryDrawing.Pen>
-                    <GeometryDrawing.Geometry>
-                        <EllipseGeometry RadiusX="3.4" RadiusY="3.4" Center="11.5,11.5" />
-                    </GeometryDrawing.Geometry>
-                </GeometryDrawing>
-            </DrawingGroup>
-        </DrawingImage.Drawing>
-    </DrawingImage>
-
-    <DrawingImage x:Key="Images.OptionsMenu.Setting.Pressed">
-        <DrawingImage.Drawing>
-            <DrawingGroup ClipGeometry="M0,0 V24 H24 V0 H0 Z">
-                <GeometryDrawing Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Pressed}" Geometry="F0 M24,24z M0,0z M10.1,1.3L10.1,1.1 12.7,1.1 12.7,1.3 13,2.6 13.2,3.7C14.2,3.9,15.1,4.3,15.9,4.8L16,4.8 17.7,3.5 17.8,3.4 18.1,3.4 18.9,4.2 19.7,5 19.7,5.3 19.6,5.4 19,6.2 18.4,7.1C18.9,7.9,19.3,8.8,19.6,9.8L19.6,9.9 20.5,10 20.7,10 21.7,10.2 21.9,10.2 21.9,12.8 21.7,12.8 20.7,13 19.6,13.2C19.4,14.2,19,15.1,18.5,15.9L19.8,17.6C19.8,17.6,19.8,17.7,19.9,17.7L19.9,18 19.1,18.8 18.3,19.6 18,19.6 17.9,19.5 16,18.4C15.2,18.9,14.2,19.3,13.3,19.5L13.3,19.6 13,21.7 13,21.9 10.4,21.9 10.4,21.7 10.2,20.5 10,19.4C9.1,19.2,8.2,18.8,7.4,18.3L7,18.4 5.3,19.7 5.2,19.8 4.9,19.8 4.1,19 3.3,18.2 3.3,17.9 3.4,17.8 4.2,16.7 4.6,16 4.8,15.7C4.4,15,4,14.2,3.8,13.3L3.4,13.2 1.4,12.9 1.2,12.9 1.2,10.3 1.4,10.3 3.5,9.99999999999999 3.8,9.9C4,8.99999999999999,4.3,8.2,4.8,7.4L4.1,6.4 3.3,5.4 3.2,5.3 3.2,5 4,4.1 4.8,3.3 5.1,3.3 5.2,3.4 7,4.7 7.2,4.9C8,4.3,8.8,3.9,9.8,3.7L10,2.6 10.1,1.3z M13.9,1.3L14.1,2.8C14.7,3,15.3,3.2,15.8,3.5L17,2.6C17.1,2.5 17.4,2.3 17.7,2.2 18,2.1 18.4,2.2 18.8,2.5L19.6,3.3 20.4,4.1C20.7,4.4 20.8,4.8 20.7,5.2 20.6,5.5 20.5,5.7 20.3,5.9L19.5,7C19.8,7.6,20.1,8.2,20.3,8.8L21.7,9C21.9,9 22.2,9.1 22.4,9.2 22.7,9.4 22.9,9.7 22.9,10.2L22.9,12.6C22.9,13.1 22.7,13.4 22.4,13.6 22.2,13.8 21.9,13.8 21.7,13.8L20.3,14C20.1,14.6,19.9,15.2,19.6,15.7L20.4,16.8C20.5,16.9 20.7,17.2 20.8,17.5 20.9,17.8 20.8,18.2 20.5,18.6L19.7,19.4 18.9,20.2C18.6,20.5 18.2,20.6 17.8,20.5 17.5,20.4 17.3,20.3 17.1,20.1L15.9,19.2C15.3,19.5,14.7,19.7,14.1,19.9L13.9,21.4C13.9,21.6 13.8,21.9 13.7,22.1 13.5,22.4 13.2,22.6 12.7,22.6L10.3,22.6C9.8,22.6 9.5,22.4 9.3,22.1 9.1,21.9 9.1,21.6 9.1,21.4L8.9,19.8C8.3,19.6,7.8,19.4,7.2,19.1L5.9,20.1C5.8,20.2 5.5,20.4 5.2,20.5 4.9,20.6 4.5,20.5 4.1,20.2L3.3,19.4 2.5,18.6C2.2,18.3 2.1,17.9 2.2,17.5 2.3,17.2 2.4,17 2.6,16.8L3.6,15.4C3.4,14.9,3.2,14.5,3,14L1.2,14C1,14 0.7,13.9 0.5,13.8 0.2,13.6 0,13.3 0,12.8L0,10.4C0,9.9 0.2,9.6 0.5,9.4 0.8,9.2 1,9.2 1.2,9.2L3,8.9 3.6,7.4 2.5,6C2.4,5.8 2.2,5.6 2.2,5.3 2.1,5 2.2,4.6 2.5,4.2L3.3,3.4 4.1,2.6C4.4,2.3 4.8,2.2 5.2,2.3 5.5,2.4 5.7,2.5 5.9,2.7L7.2,3.7C7.7,3.4,8.2,3.2,8.8,3L9,1.4C9,1.2 9.1,0.9 9.2,0.7 9.5,0.3 9.8,0 10.3,0L12.7,0C13.2,0 13.5,0.2 13.7,0.5 13.8,0.8 13.9,1.1 13.9,1.3z" />
-                <GeometryDrawing>
-                    <GeometryDrawing.Pen>
-                        <Pen Brush="{DynamicResource Colors.Images.OptionsMenu.Setting.Pressed}" Thickness="1" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter" />
-                    </GeometryDrawing.Pen>
-                    <GeometryDrawing.Geometry>
-                        <EllipseGeometry RadiusX="3.4" RadiusY="3.4" Center="11.5,11.5" />
-                    </GeometryDrawing.Geometry>
-                </GeometryDrawing>
-            </DrawingGroup>
-        </DrawingImage.Drawing>
-    </DrawingImage>
-
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/Resources/Images/bg_login.jpeg
+++ b/src/WPFEduSolution/WPFBeginner/Resources/Images/bg_login.jpeg
--- a/src/WPFEduSolution/WPFBeginner/Resources/Images/btn_search_001.png
+++ b/src/WPFEduSolution/WPFBeginner/Resources/Images/btn_search_001.png
--- a/src/WPFEduSolution/WPFBeginner/Resources/Images/ico_pw.png
+++ b/src/WPFEduSolution/WPFBeginner/Resources/Images/ico_pw.png
--- a/src/WPFEduSolution/WPFBeginner/Resources/Images/ico_user.png
+++ b/src/WPFEduSolution/WPFBeginner/Resources/Images/ico_user.png
--- a/src/WPFEduSolution/WPFBeginner/Resources/SharedResourceDictionary.cs
+++ b/src/WPFEduSolution/WPFBeginner/Resources/SharedResourceDictionary.cs
@@ -1,43 +0,0 @@
-using System.Windows;
-
-namespace WPFBeginner.Resources
-{
-    public class SharedResourceDictionary : ResourceDictionary
-    {
-        private static Dictionary<Uri, WeakReference> _cache = new Dictionary<Uri, WeakReference>();
-
-        private Uri source;
-
-        public new Uri Source
-        {
-            get => source;
-            set
-            {
-                source = value;
-                if (!_cache.ContainsKey(source))
-                {
-                    AddToCache();
-                }
-                else
-                {
-                    WeakReference weakReference = _cache[source];
-                    if (weakReference != null && weakReference.IsAlive)
-                        MergedDictionaries.Add((ResourceDictionary)weakReference.Target);
-                    else
-                        AddToCache();
-
-                }
-
-            }
-        }
-
-        private void AddToCache()
-        {
-            base.Source = source;
-            if (_cache.ContainsKey(source))
-                _cache.Remove(source);
-
-            _cache.Add(source, new WeakReference(this, false));
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Services/EnterFocusAssistanct.cs
+++ b/src/WPFEduSolution/WPFBeginner/Services/EnterFocusAssistanct.cs
@@ -1,52 +0,0 @@
-using System.Windows;
-using System.Windows.Input;
-
-namespace WPFBeginner.Services
-{
-    public class EnterKeyTraversal
-    {
-        public static readonly DependencyProperty IsEnabledProperty =
-            DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(EnterKeyTraversal), new UIPropertyMetadata(false, IsEnabledChanged));
-
-        public static bool GetIsEnabled(DependencyObject obj) => (bool)obj.GetValue(IsEnabledProperty);
-
-        public static void SetIsEnabled(DependencyObject obj, bool value) => obj.SetValue(IsEnabledProperty, value);
-
-        static void PreviewKeyDown(object sender, KeyEventArgs e)
-        {
-            var uiElement = e.OriginalSource as FrameworkElement;
-
-            if (e.Key == Key.Enter)
-            {
-                e.Handled = true;
-                uiElement.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
-            }
-        }
-
-        private static void Unloaded(object sender, RoutedEventArgs e)
-        {
-            var uiElement = sender as FrameworkElement;
-            if (uiElement == null)
-                return;
-
-            uiElement.Unloaded -= Unloaded;
-            uiElement.PreviewKeyDown -= PreviewKeyDown;
-        }
-
-        static void IsEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        {
-            var ue = d as FrameworkElement;
-            if (ue == null) return;
-
-            if ((bool)e.NewValue)
-            {
-                ue.Unloaded += Unloaded;
-                ue.PreviewKeyDown += PreviewKeyDown;
-            }
-            else
-            {
-                ue.PreviewKeyDown -= PreviewKeyDown;
-            }
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Services/PasswordBoxAssistant.cs
+++ b/src/WPFEduSolution/WPFBeginner/Services/PasswordBoxAssistant.cs
@@ -1,95 +0,0 @@
-using System.Windows;
-using System.Windows.Controls;
-
-namespace WPFBeginner.Services
-{
-    public static class PasswordBoxAssistant
-    {
-        #region BoundPassword Property
-
-        public static readonly DependencyProperty BoundPassword =
-            DependencyProperty.RegisterAttached(nameof(BoundPassword), typeof(string), typeof(PasswordBoxAssistant), new PropertyMetadata(string.Empty, OnBoundPasswordChanged));
-
-        public static string GetBoundPassword(DependencyObject dp) => (string)dp.GetValue(BoundPassword);
-
-        public static void SetBoundPassword(DependencyObject dp, string value) => dp.SetValue(BoundPassword, value);
-
-        private static void OnBoundPasswordChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        {
-            var box = d as PasswordBox;
-
-            // only handle this event when the property is attached to a PasswordBox
-            // and when the BindPassword attached property has been set to true
-            if (d == null || !GetEnableBindingPassword(d))
-                return;
-
-            // avoid recursive updating by ignoring the box's changed event
-            box.PasswordChanged -= HandlePasswordChanged;
-
-            string newPassword = (string)e.NewValue;
-
-            if (!GetUpdatingPassword(box))
-                box.Password = newPassword;
-
-            box.PasswordChanged += HandlePasswordChanged;
-        }
-
-        #endregion
-
-        #region EnableBindingPassword
-
-        public static readonly DependencyProperty EnableBindingPassword =
-            DependencyProperty.RegisterAttached(nameof(EnableBindingPassword), typeof(bool), typeof(PasswordBoxAssistant), new PropertyMetadata(false, OnEnableBindingPasswordChanged));
-
-        public static bool GetEnableBindingPassword(DependencyObject dp) => (bool)dp.GetValue(EnableBindingPassword);
-
-        public static void SetEnableBindingPassword(DependencyObject dp, bool value) => dp.SetValue(EnableBindingPassword, value);
-
-        private static void OnEnableBindingPasswordChanged(DependencyObject dp, DependencyPropertyChangedEventArgs e)
-        {
-            // when the BindPassword attached property is set on a PasswordBox,
-            // start listening to its PasswordChanged event
-
-            var box = dp as PasswordBox;
-
-            if (box == null)
-                return;
-
-            bool wasBound = (bool)(e.OldValue);
-            bool needToBind = (bool)(e.NewValue);
-
-            if (wasBound)
-                box.PasswordChanged -= HandlePasswordChanged;
-
-            if (needToBind)
-                box.PasswordChanged += HandlePasswordChanged;
-        }
-
-        #endregion
-
-        #region UpdatingPassword
-        #endregion
-
-        private static readonly DependencyProperty UpdatingPassword =
-            DependencyProperty.RegisterAttached(nameof(UpdatingPassword), typeof(bool), typeof(PasswordBoxAssistant), new PropertyMetadata(false));
-
-        private static bool GetUpdatingPassword(DependencyObject dp) => (bool)dp.GetValue(UpdatingPassword);
-
-        private static void SetUpdatingPassword(DependencyObject dp, bool value) => dp.SetValue(UpdatingPassword, value);
-
-        private static void HandlePasswordChanged(object sender, RoutedEventArgs e)
-        {
-            var box = sender as PasswordBox;
-
-            // set a flag to indicate that we're updating the password
-            SetUpdatingPassword(box, true);
-            // push the new password into the BoundPassword property
-            SetBoundPassword(box, box.Password);
-            SetUpdatingPassword(box, false);
-        }
-
-
-
-
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Services/ResourceExplorer.cs
+++ b/src/WPFEduSolution/WPFBeginner/Services/ResourceExplorer.cs
@@ -1,54 +0,0 @@
-using System.Windows;
-
-namespace WPFBeginner.Services
-{
-    internal static class ResourceExplorer
-    {
-        public static string GetStringResource(string key)
-        {
-            var cultureCode = App.Config.Language;
-            var rd = App.Current.Resources.MergedDictionaries.FirstOrDefault(i => i.Source.AbsolutePath.EndsWith($"{cultureCode}.xaml"));
-            if (rd == null)
-                return null;
-
-            return rd[key] as string;
-        }
-
-        public static void ChangeXamlResource(string oldRes, string newRes)
-        {
-            var found = App.Current.Resources.MergedDictionaries.Select((item, i) => new { Item = item, Index = i }).FirstOrDefault(i => i.Item.Source.AbsoluteUri.Equals($"{oldRes}", StringComparison.OrdinalIgnoreCase));
-            if (found == null)
-                return;
-
-            var newResource = new ResourceDictionary()
-            {
-                Source = new Uri(newRes, UriKind.RelativeOrAbsolute)
-            };
-            App.Current.Resources.MergedDictionaries.Remove(found.Item);
-            App.Current.Resources.MergedDictionaries.Add(newResource);
-        }
-
-        public static ResourceDictionary GetLanguageResourceDic(string name)
-        {
-            var foundName = $"pack://application:,,,/Themes/Cultures/{name}.xaml";
-            //var foundName = $"/WPFBeginner;component/Themes/Cultures/{name}.xaml";
-            var found = App.Current.Resources.MergedDictionaries.Select((item, i) => new { Item = item, Index = i }).FirstOrDefault(i => i.Item.Source.AbsoluteUri.Equals(foundName, StringComparison.OrdinalIgnoreCase));
-            if (found == null)
-                return new ResourceDictionary() { Source = new Uri(foundName, UriKind.RelativeOrAbsolute) };
-
-            return found.Item;
-        }
-
-        public static ResourceDictionary GetThemeResourceDic(string name)
-        {
-            var foundName = $"pack://application:,,,/Themes/Colors/{name}.xaml";
-            //var foundName = $"/WPFBeginner;component/Themes/Colors/{name}.xaml";
-            var found = App.Current.Resources.MergedDictionaries.Select((item, i) => new { Item = item, Index = i }).FirstOrDefault(i => i.Item.Source.AbsoluteUri.Equals(foundName, StringComparison.OrdinalIgnoreCase));
-            if (found == null)
-                return new ResourceDictionary() { Source = new Uri(foundName, UriKind.RelativeOrAbsolute) };
-
-            return found.Item;
-        }
-
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Services/ViewModelLocator.cs
+++ b/src/WPFEduSolution/WPFBeginner/Services/ViewModelLocator.cs
@@ -1,10 +0,0 @@
-using CommunityToolkit.Mvvm.DependencyInjection;
-using WPFBeginner.ViewModels;
-
-namespace WPFBeginner.Services
-{
-    internal class ViewModelLocator
-    {
-        public MainWindowViewModel MainWindowViewModel => Ioc.Default.GetService<MainWindowViewModel>();
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Themes/Colors/DefaultTheme.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Themes/Colors/DefaultTheme.xaml
@@ -1,55 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Background" Color="#FF1E1E1E"/>
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Foreground" Color="LightGreen"/>
-    <SolidColorBrush x:Key="Colors.Section.HorizontalSeperator" Color="Cyan" Opacity="0.8"/>
-    <SolidColorBrush x:Key="Colors.Main.Background" Color="#FF1E1E1E" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Background" Color="#FF383838" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.BorderBrush" Color="#FF424242"  />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Foreground" Color="White"  />
-    <SolidColorBrush x:Key="Colors.TextBox.Background" Color="#FF383838"/>
-    <SolidColorBrush x:Key="Colors.TextBox.Foreground" Color="White"/>
-    <SolidColorBrush x:Key="Colors.TextBox.BorderBrush" Color="#FF424242"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.Normal" Color="White"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MouseOver" Color="Pink"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MousePressed" Color="Coral"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.Normal" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MouseOver" Color="Pink"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MousePressed" Color="Coral"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.Normal" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MouseOver" Color="#FF1F1F1F"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MousePressed" Color="#FF1F1F1F"/>
-
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Normal" StartPoint="0,0" EndPoint="0,1">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Normal" Color="White" />
-    <!--<SolidColorBrush x:Key="Colors.DataGridButton.Background.MouseOver" Color="#FFEB530C" Opacity="0.6" />-->
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.MouseOver" StartPoint="0,0" EndPoint="0,1" Opacity="0.6">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.MouseOver" Color="Yellow" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Pressed" StartPoint="0,0" EndPoint="0,1" Opacity="0.8">
-        <GradientStop Color="#38301f" Offset="0.0"/>
-        <GradientStop Color="#4a3c2b" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="0.5"/>
-        <GradientStop Color="#342e1d" Offset="1.0"/>
-    </LinearGradientBrush>
-    <!--<SolidColorBrush x:Key="Colors.DataGridButton.Background.Pressed" Color="#FFEB530C" Opacity="0.8" />-->
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Pressed" Color="LightSkyBlue" />
-    
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Normal" Color="#FFB8B8B9"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Pressed" Color="#FFB8B8B9" Opacity="0.6"/>
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MouseOver" Color="#FF474D51"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MousePressed" Color="#FF474D51"/>
-
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/Themes/Colors/LightTheme.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Themes/Colors/LightTheme.xaml
@@ -1,52 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Background" Color="#FFF0F0F0"/>
-    <SolidColorBrush x:Key="Colors.TitleBar.Title.Foreground" Color="DarkSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.Section.HorizontalSeperator" Color="Gray" Opacity="0.8"/>
-    <SolidColorBrush x:Key="Colors.Main.Background" Color="#FFF0F0F0" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Background" Color="#FFF5F5F5" />
-    <SolidColorBrush x:Key="Colors.SettingPopup.BorderBrush" Color="#FFDDDDDD"  />
-    <SolidColorBrush x:Key="Colors.SettingPopup.Foreground" Color="Black"  />
-    <SolidColorBrush x:Key="Colors.TextBox.Background" Color="#FFF5F5F5"/>
-    <SolidColorBrush x:Key="Colors.TextBox.Foreground" Color="Black"/>
-    <SolidColorBrush x:Key="Colors.TextBox.BorderBrush" Color="#FFDDDDDD"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.Normal" Color="Black"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MouseOver" Color="MediumSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Foreground.MousePressed" Color="SlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.Normal" Color="#FFEEEEEE"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MouseOver" Color="MediumSlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.BorderBrush.MousePressed" Color="SlateBlue"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.Normal" Color="#FFEEEEEE"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MouseOver" Color="#FFE0E0E0"/>
-    <SolidColorBrush x:Key="Colors.SearchButton.Background.MousePressed" Color="#FFD6D6D6"/>
-
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Normal" StartPoint="0,0" EndPoint="0,1">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Normal" Color="Black" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.MouseOver" StartPoint="0,0" EndPoint="0,1" Opacity="0.6">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.MouseOver" Color="DarkSlateBlue" />
-    <LinearGradientBrush x:Key="Colors.DataGridButton.Background.Pressed" StartPoint="0,0" EndPoint="0,1" Opacity="0.8">
-        <GradientStop Color="#E3EAF3" Offset="0.0"/>
-        <GradientStop Color="#D4DFEA" Offset="0.5"/>
-        <GradientStop Color="#C8D4E1" Offset="0.5"/>
-        <GradientStop Color="#BFCCE0" Offset="1.0"/>
-    </LinearGradientBrush>
-    <SolidColorBrush x:Key="Colors.DataGridButton.Foreground.Pressed" Color="CornflowerBlue" />
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Normal" Color="#FF6E6E70"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Pressed" Color="#FF6E6E70" Opacity="0.6"/>
-
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MouseOver" Color="#FFD3D3D5"/>
-    <SolidColorBrush x:Key="Colors.Images.OptionsMenu.Setting.Background.MousePressed" Color="#FFD3D3D5"/>
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/Themes/Cultures/en-US.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Themes/Cultures/en-US.xaml
@@ -1,31 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:sys="clr-namespace:System;assembly=mscorlib"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <sys:String x:Key="Cultures.LoginWindow.ErrorMessage.DuplicatedExecute">Duplicated execution.</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.ErrorMessage.InvalidUser">Please check your ID and password again.</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.LoginButtonText">Login</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.Inform">Please enter your ID and password.</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.Title">Contact Management Program</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Name">Name:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Call">Contact</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.No">Employee Number:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Mail">Email:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.ErrorMessage.SearchConditionEmpty">No search condition provided. Please enter a search condition.</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.Button.Add">Add</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Search">Search</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Delete">Delete</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Init">Reset</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Name">Name</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Call">Contact</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.No">Employee Number</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Email">Email</sys:String>
-
-    <sys:String x:Key="Cultures.RegistMemberWindow.RegistButton">Register</sys:String>
-    <sys:String x:Key="Cultures.RegistMemberWindow.CancelButton">Cancel</sys:String>
-    <sys:String x:Key="Cultures.RegistMemberWindow.ErrorMessage.FillMustValue">Name or employee number is required.</sys:String>
-
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/Themes/Cultures/ko-KR.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Themes/Cultures/ko-KR.xaml
@@ -1,31 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:sys="clr-namespace:System;assembly=mscorlib"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <sys:String x:Key="Cultures.LoginWindow.ErrorMessage.DuplicatedExecute">중복된 실행입니다.</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.ErrorMessage.InvalidUser">아이디와 비번을 다시 한번 확인해주세요</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.LoginButtonText">로그인</sys:String>
-    <sys:String x:Key="Cultures.LoginWindow.Inform">아이디와 비번을 입력해주세요</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.Title">연락처 관리 프로그램</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Name">이름:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Call">연락처</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.No">사번:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Label.Mail">이메일:</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.ErrorMessage.SearchConditionEmpty">검색 조건이 없습니다. 검색 조건을 입력해주세요</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.Button.Add">추가</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Search">검 색</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Delete">삭제</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.Button.Init">초기화</sys:String>
-
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Name">이름</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Call">연락처</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.No">사번</sys:String>
-    <sys:String x:Key="Cultures.MainWindow.DatagGid.Column.Email">이메일</sys:String>
-
-    <sys:String x:Key="Cultures.RegistMemberWindow.RegistButton">등록</sys:String>
-    <sys:String x:Key="Cultures.RegistMemberWindow.CancelButton">취소</sys:String>
-    <sys:String x:Key="Cultures.RegistMemberWindow.ErrorMessage.FillMustValue">이름 또는 사번은 반드시 필요합니다.</sys:String>
-
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/Themes/Styles/Buttons.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Themes/Styles/Buttons.xaml
@@ -1,164 +0,0 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-
-    <!--Maximize Button-->
-    <Style x:Key="TiTleBarMaximizeButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
-                        <Path Fill="#FFB8B8B9" Height="14" Width="14" Canvas.Left="-7" Canvas.Top="5">
-                            <Path.Style>
-                                <Style TargetType="Path">
-                                    <Style.Triggers>
-                                        <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Normal">
-                                            <!--<Setter Property="Data" Value="F1M3,5C3,5 3,11 3,11 3,11 9,11 9,11 9,11 9,5 9,5 9,5 3,5 3,5z M5,3C5,3,5,3.375,5,3.938L5,4 6,4C8,4 10,4 10,4 10,4 10,6 10,8L10,9 10.062,9C10.625,9 11,9 11,9 11,9 11,3 11,3 11,3 5,3 5,3z M4,2C4,2 12,2 12,2 12,2 12,10 12,10 12,10 11.5,10 10.75,10L10,10 10,10.75C10,11.5 10,12 10,12 10,12 2,12 2,12 2,12 2,4 2,4 2,4 2.5,4 3.25,4L4,4 4,3.25C4,2.5,4,2,4,2z"/>-->
-                                            <Setter Property="Data" Value="F1M3,3C3,3 3,11 3,11 3,11 11,11 11,11 11,11 11,3 11,3 11,3 3,3 3,3z M2,2C2,2 12,2 12,2 12,2 12,12 12,12 12,12 2,12 2,12 2,12 2,2 2,2z" />
-                                        </DataTrigger>
-                                        <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Maximized">
-                                            <Setter  Property="Data" Value="F1M3,5C3,5 3,11 3,11 3,11 9,11 9,11 9,11 9,5 9,5 9,5 3,5 3,5z M5,3C5,3 5,4 5,4 5,4 10,4 10,4 10,4 10,9 10,9 10,9 11,9 11,9 11,9 11,3 11,3 11,3 5,3 5,3z M4,2C4,2 12,2 12,2 12,2 12,10 12,10 12,10 10,10 10,10 10,10 10,12 10,12 10,12 2,12 2,12 2,12 2,4 2,4 2,4 4,4 4,4 4,4 4,2 4,2z"/>
-                                        </DataTrigger>
-                                    </Style.Triggers>
-                                </Style>
-                            </Path.Style>
-                        </Path>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-
-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FF474D51"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FF3D4347"/>
-            </Trigger>
-            <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Normal">
-                <Setter Property="ToolTip" Value="Maximize"/>
-            </DataTrigger>
-            <DataTrigger Binding="{Binding WindowState, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" Value="Maximized">
-                <Setter Property="ToolTip" Value="Restore"/>
-            </DataTrigger>
-        </Style.Triggers>
-    </Style>
-
-    <!--Minimize Button-->
-    <Style x:Key="TiTleBarMinimizeButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
-                        <Path Data="F1M2,2C2,2 12,2 12,2 12,2 12,3 12,3 12,3 2,3 2,3 2,3 2,2 2,2z" Fill="#FFB8B8B9" Height="4" Canvas.Left="0" Canvas.Top="0" Width="13"/>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FF474D51"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FF3D4347"/>
-            </Trigger>
-        </Style.Triggers>
-    </Style>
-
-    <!--Close Button-->
-    <Style x:Key="TiTleBarCloseButton" TargetType="{x:Type Button}">
-        <Setter Property="Background" Value="Transparent"/>
-        <Setter Property="Focusable" Value="False" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="{x:Type Button}">
-                    <Border Background="{TemplateBinding Background}">
-                        <Path Data="F1M2,2C2,2,2.25,2,2.5,2L2.999,2 3,2 3,2.001 3.221,2.222C3.652,2.653,4.66,3.661,5.847,4.848L6.999,6 8.152,4.848C9.734,3.266,10.999,2,10.999,2L11,2.001 11,2C11,2 12,2 12,2 12,2 12,3 12,3 12,3 10.734,4.266 9.152,5.848L8,7 9.152,8.152C10.734,9.734 12,11 12,11 12,11 12,12 12,12 12,12 11,12 11,12L11,11.999 10.999,12C10.999,12,9.733,10.734,8.151,9.152L6.999,8 5.847,9.152C4.66,10.339,3.652,11.347,3.221,11.778L3,11.999 3,12 2.999,12C3,12 2,12 2,12 2,12 2,11 2,11 2,11 3.265,9.734 4.847,8.152L5.999,7 4.847,5.848C3.265,4.266,1.999,3,1.999,3L2,2.999 2,2.844C2,2.562,2,2,2,2z" 
-					Fill="#FFB8B8B9" Height="13" Canvas.Left="0" Canvas.Top="0" Width="13"/>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-        <Style.Triggers>
-            <Trigger Property="IsMouseOver" Value="True">
-                <Setter Property="Background" Value="#FFF06251"/>
-            </Trigger>
-            <Trigger Property="IsPressed" Value="True">
-                <Setter Property="Background" Value="#FFED3F2B"/>
-            </Trigger>
-        </Style.Triggers>
-    </Style>
-
-    <Style x:Key="SettingButtonStyle" TargetType="ToggleButton">
-        <Setter Property="SnapsToDevicePixels" Value="True" />
-        <Setter Property="Focusable" Value="False"/>
-        <Setter Property="Height" Value="22" />
-        <Setter Property="Width" Value="22" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="ToggleButton">
-                    <Border x:Name="border" Padding="{TemplateBinding Padding}">
-                        <Viewbox HorizontalAlignment="Center">
-                            <Image Grid.Column="0" x:Name="img" Stretch="Fill" Source="{DynamicResource Images.OptionsMenu.Setting.Normal}" />
-                        </Viewbox>
-                    </Border>
-
-                    <ControlTemplate.Triggers>
-                        <Trigger Property="IsMouseOver" Value="True">
-                            <Setter TargetName="border" Property="Background" Value="{DynamicResource Colors.Images.OptionsMenu.Setting.Background.MouseOver}" />
-                            <Setter TargetName="img" Property="Source" Value="{DynamicResource Images.OptionsMenu.Setting.Pressed}"/>
-                        </Trigger>
-                        <Trigger Property="IsPressed" Value="True">
-                            <Setter TargetName="border" Property="Background" Value="{DynamicResource Colors.Images.OptionsMenu.Setting.Background.MousePressed}"/>
-                            <Setter TargetName="img" Property="Source" Value="{DynamicResource Images.OptionsMenu.Setting.Pressed}"/>
-                        </Trigger>
-                        <Trigger Property="IsChecked" Value="True">
-                            <Setter TargetName="border" Property="Background" Value="{DynamicResource Colors.Images.OptionsMenu.Setting.Background.MousePressed}"/>
-                            <Setter TargetName="img" Property="Source" Value="{DynamicResource Images.OptionsMenu.Setting.Pressed}"/>
-                        </Trigger>
-                        <Trigger Property="IsEnabled" Value="False">
-                            <Setter Property="Opacity" Value="0.3" />
-                        </Trigger>
-                    </ControlTemplate.Triggers>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-    </Style>
-
-    <Style x:Key="DataGridEditButtonStyle" TargetType="Button">
-        <Setter Property="BorderBrush" Value="Transparent"/>
-        <Setter Property="BorderThickness" Value="0"/>
-        <Setter Property="VerticalAlignment" Value="Bottom"/>
-        <Setter Property="Width" Value="56"/>
-        <Setter Property="Height" Value="20"/>
-        <Setter Property="Margin" Value="3 0"/>
-        <Setter Property="Background" Value="{DynamicResource Colors.DataGridButton.Background.Normal}"/>
-        <Setter Property="Foreground" Value="{DynamicResource Colors.DataGridButton.Foreground.Normal}"/>
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="Button">
-                    <Border CornerRadius="10" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
-                        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Content="{TemplateBinding Content}"/>
-                    </Border>
-                    <ControlTemplate.Triggers>
-                        <Trigger Property="IsMouseOver" Value="True">
-                            <Setter Property="Background" Value="{DynamicResource Colors.DataGridButton.Background.MouseOver}"/>
-                            <Setter Property="Foreground" Value="{DynamicResource Colors.DataGridButton.Foreground.MouseOver}"/>
-                        </Trigger>
-                        <Trigger Property="IsPressed" Value="True">
-                            <Setter Property="Background" Value="{DynamicResource Colors.DataGridButton.Background.Pressed}"/>
-                            <Setter Property="Foreground" Value="{DynamicResource Colors.DataGridButton.Foreground.Pressed}"/>
-                        </Trigger>
-                        <Trigger Property="IsEnabled" Value="False">
-                            <Setter Property="Opacity" Value="0.3" />
-                        </Trigger>
-                    </ControlTemplate.Triggers>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-    </Style>
-
-</ResourceDictionary>
--- a/src/WPFEduSolution/WPFBeginner/ViewModels/LoginWindowViewModel.cs
+++ b/src/WPFEduSolution/WPFBeginner/ViewModels/LoginWindowViewModel.cs
@@ -1,37 +0,0 @@
-using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
-using System.Windows;
-using System.Windows.Input;
-using WPFBeginner.Services;
-
-namespace WPFBeginner.ViewModels
-{
-    public partial class LoginWindowViewModel : ObservableObject
-    {
-        [ObservableProperty]
-        private string user;
-
-        [ObservableProperty]
-        private string password;
-
-        [ObservableProperty]
-        private string message;
-
-        public ICommand LoginClickCommand => new RelayCommand<Window>((window) =>
-        {
-            if (CheckID() && CheckPassword())
-                window.DialogResult = true;
-            else
-                Message = ResourceExplorer.GetStringResource("Cultures.LoginWindow.ErrorMessage.InvalidUser");
-        });
-
-        public ICommand CloseClickCommand => new RelayCommand<Window>((window) =>
-        {
-            window.DialogResult = false;
-        });
-
-        private bool CheckID() => user?.Equals(App.Config.Login.User, StringComparison.OrdinalIgnoreCase) ?? false;
-
-        private bool CheckPassword() => password?.Equals(App.Config.Login.Password, StringComparison.OrdinalIgnoreCase) ?? false;
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/ViewModels/MainWindowViewModel.cs
+++ b/src/WPFEduSolution/WPFBeginner/ViewModels/MainWindowViewModel.cs
@@ -1,217 +0,0 @@
-using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
-using System.Collections.ObjectModel;
-using System.Windows;
-using System.Windows.Input;
-using WPFBeginner.Models;
-using WPFBeginner.Services;
-using WPFBeginner.Views;
-
-namespace WPFBeginner.ViewModels
-{
-    public partial class MainWindowViewModel : ObservableRecipient
-    {
-        private ObservableCollection<Member> members;
-        public ObservableCollection<Member> Members
-        {
-            get
-            {
-                if (filterMemebers != null)
-                    return filterMemebers;
-
-                return members;
-            }
-            set => SetProperty(ref members, value);
-        }
-
-        private ObservableCollection<Member> filterMemebers;
-
-        [ObservableProperty]
-        private Member selectedMember;
-
-        private Member searchModel;
-
-        public string MemberName
-        {
-            get => searchModel?.Name;
-            set
-            {
-                if (searchModel == null)
-                    searchModel = new Member();
-
-                searchModel.Name = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public string Call
-        {
-            get => searchModel?.Call;
-            set
-            {
-                if (searchModel == null)
-                    searchModel = new Member();
-
-                searchModel.Call = value;
-                OnPropertyChanged();
-            }
-        }
-        public string EmployeeNo
-        {
-            get => searchModel?.EmployeeNo;
-            set
-            {
-                if (searchModel == null)
-                    searchModel = new Member();
-
-                searchModel.EmployeeNo = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public string EMail
-        {
-            get => searchModel.EMail;
-            set
-            {
-                if (searchModel == null)
-                    searchModel = new Member();
-
-                searchModel.EMail = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public ICommand SearchClickCommand => new RelayCommand(() =>
-        {
-            var errorMessage = ValidateSearchValues();
-            if (errorMessage != null)
-            {
-                MessageBox.Show(errorMessage);
-                filterMemebers = null;
-                return;
-            }
-
-            IEnumerable<Member> result = Members;
-
-            if (!string.IsNullOrWhiteSpace(MemberName))
-                result = result.Where(i => i.Name?.Contains(MemberName) ?? false);
-
-            if (!string.IsNullOrWhiteSpace(EMail))
-                result = result.Where(i => i.EMail?.Contains(EMail) ?? false);
-
-            if (!string.IsNullOrWhiteSpace(Call))
-                result = result.Where(i => i.Call?.Contains(Call) ?? false);
-
-            if (!string.IsNullOrWhiteSpace(EmployeeNo))
-                result = result.Where(i => i.EmployeeNo?.Contains(EmployeeNo) ?? false);
-
-            if (result == null)
-                filterMemebers = new ObservableCollection<Member>();
-            else
-                filterMemebers = new ObservableCollection<Member>(result);
-
-            OnPropertyChanged(nameof(Members));
-        });
-
-        public ICommand CloseCommand => new RelayCommand<Window>(window => window.Close());
-
-        public ICommand MinimizeCommand => new RelayCommand<Window>(window => window.WindowState = WindowState.Minimized);
-
-        public ICommand MaximizeCommad => new RelayCommand<Window>(window =>
-        {
-            switch (window.WindowState)
-            {
-                case WindowState.Maximized:
-                    window.WindowState = WindowState.Normal;
-                    break;
-
-                case WindowState.Normal:
-                    window.WindowState = WindowState.Maximized;
-                    break;
-            }
-        });
-
-        public bool IsKorean => App.Config.Language.Equals("ko-KR", StringComparison.OrdinalIgnoreCase);
-        public bool IsEnglish => App.Config.Language.Equals("en-US", StringComparison.OrdinalIgnoreCase);
-
-
-        public ICommand LangueChangeCommand => new RelayCommand<string>(code =>
-        {
-            App.Config.Language = code;
-            OnPropertyChanged(nameof(IsKorean));
-            OnPropertyChanged(nameof(IsEnglish));
-        });
-
-
-
-        public bool IsDefaultTheme => App.Config.Theme.Equals("DefaultTheme", StringComparison.OrdinalIgnoreCase);
-        public bool IsLightTheme => App.Config.Theme.Equals("LightTheme", StringComparison.OrdinalIgnoreCase);
-
-        public ICommand ThemeChangeCommand => new RelayCommand<string>(code =>
-        {
-            App.Config.Theme = code;
-            OnPropertyChanged(nameof(IsDefaultTheme));
-            OnPropertyChanged(nameof(IsLightTheme));
-        });
-
-        private string ValidateSearchValues()
-        {
-            if (string.IsNullOrWhiteSpace(MemberName)
-                && string.IsNullOrWhiteSpace(EmployeeNo)
-                && string.IsNullOrWhiteSpace(Call)
-                && string.IsNullOrWhiteSpace(EMail))
-                return ResourceExplorer.GetStringResource("Cultures.MainWindow.ErrorMessage.SearchConditionEmpty");
-
-            return null;
-        }
-
-        public ICommand DeleteClickCommand => new RelayCommand(() =>
-        {
-            if (SelectedMember == null)
-                return;
-
-            Members.Remove(SelectedMember);
-        });
-
-        public ICommand InitClickCommand => new RelayCommand(() =>
-        {
-            filterMemebers = null;
-            searchModel = new Member();
-            OnPropertyChanged(nameof(MemberName));
-            OnPropertyChanged(nameof(EmployeeNo));
-            OnPropertyChanged(nameof(EMail));
-            OnPropertyChanged(nameof(Call));
-            OnPropertyChanged(nameof(Members));
-        });
-
-        public ICommand AddClickCommand => new RelayCommand<Window>((parentWindow) =>
-        {
-            var registDialog = new RegistMemberWindow();
-            registDialog.Owner = parentWindow;
-            var result = registDialog.ShowDialog();
-            if (result == true)
-            {
-                var dx = registDialog.DataContext as RegistMemberWindowViewModel;
-                if (dx == null)
-                    return;
-                Members.Add(Member.Create(dx.MemberName, dx.Call, dx.Email, dx.EmployeeNo));
-            }
-        });
-
-
-        public MainWindowViewModel()
-        {
-            CreateDefaultMember();
-            searchModel = new Member();
-        }
-
-        private void CreateDefaultMember()
-        {
-            members = new ObservableCollection<Member>();
-            foreach (var member in App.Config.Members)
-                members.Add(Member.Create(member.Name, member.Call, member.EMail, member.EmployeeNo));
-            OnPropertyChanged(nameof(Members));
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/ViewModels/RegistMemberWindowViewModel.cs
+++ b/src/WPFEduSolution/WPFBeginner/ViewModels/RegistMemberWindowViewModel.cs
@@ -1,49 +0,0 @@
-using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
-using System.Windows;
-using System.Windows.Input;
-using WPFBeginner.Services;
-
-namespace WPFBeginner.ViewModels
-{
-    public partial class RegistMemberWindowViewModel : ObservableRecipient
-    {
-        [ObservableProperty]
-        private string memberName;
-
-        [ObservableProperty]
-        private string call;
-
-        [ObservableProperty]
-        private string employeeNo;
-
-        [ObservableProperty]
-        private string email;
-
-        public ICommand RegistClickCommand => new RelayCommand<Window>((window) =>
-        {
-            var result = Validate();
-            if (result != null)
-                MessageBox.Show(result);
-            else
-                window.DialogResult = true;
-        });
-
-        public ICommand CancelClickCommand => new RelayCommand<Window>((window) =>
-        {
-            window.DialogResult = false;
-        });
-
-
-
-        private string Validate()
-        {
-            if (string.IsNullOrWhiteSpace(MemberName) || string.IsNullOrWhiteSpace(EmployeeNo))
-                return ResourceExplorer.GetStringResource("Cultures.RegistMemberWindow.ErrorMessage.FillMustValue");
-
-            return null;
-        }
-
-
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Views/LoginWindow.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Views/LoginWindow.xaml
@@ -1,90 +0,0 @@
-<Window x:Class="WPFBeginner.Views.LoginWindow"
-        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:vm="clr-namespace:WPFBeginner.ViewModels"
-        xmlns:sv="clr-namespace:WPFBeginner.Services"
-        Background="Transparent" AllowsTransparency="True"
-        WindowStyle="None" Name="root" WindowStartupLocation="CenterScreen"
-        mc:Ignorable="d" Height="436" Width="720">
-
-    <Window.DataContext>
-        <vm:LoginWindowViewModel/>
-    </Window.DataContext>
-    
-    <WindowChrome.WindowChrome>
-        <WindowChrome CaptionHeight="{Binding ElementName=root, Path=ActualHeight}" />
-    </WindowChrome.WindowChrome>
-
-    <Window.Resources>
-        <Style x:Key="LoginButtonStyle" TargetType="Button">
-            <Setter Property="Template" >
-                <Setter.Value>
-                    <ControlTemplate TargetType="Button">
-                        <Border CornerRadius="15" Background="{TemplateBinding Background}">
-                            <Label HorizontalAlignment="Center" VerticalAlignment="Center" 
-                                   Foreground="{Binding RelativeSource={RelativeSource AncestorType=Button}, Path=Foreground}"
-                                   Content="{Binding RelativeSource={RelativeSource AncestorType=Button}, Path=Content}"/>
-                        </Border>
-                    </ControlTemplate>
-                </Setter.Value>
-            </Setter>
-        </Style>
-    </Window.Resources>
-
-    <Window.Clip>
-        <RectangleGeometry Rect="0,0,720,436" RadiusX="15" RadiusY="15"/>
-    </Window.Clip>
-
-    <Border Background="Transparent">
-        <Grid>
-            <Grid.RowDefinitions>
-                <RowDefinition Height="36"/>
-                <RowDefinition Height="*"/>
-            </Grid.RowDefinitions>
-
-            <Image Source="/Resources/Images/bg_login.jpeg" Stretch="Fill" Grid.RowSpan="2"/>
-            <Grid Grid.Row="0">
-                <StackPanel Orientation="Horizontal" Margin="0,0,17,0" Height="29" HorizontalAlignment="Right" VerticalAlignment="Top" WindowChrome.IsHitTestVisibleInChrome="True">
-                    <Button Width="46" Height="29" Style="{DynamicResource TiTleBarCloseButton}" Command="{Binding CloseClickCommand}" CommandParameter="{Binding ElementName=root}"
-                            IsTabStop="True" TabIndex="4"/>
-                </StackPanel>
-            </Grid>
-            <Grid Grid.Row="1">
-                <Label Content="WPF toy project" FontFamily="Noto Sans CJK KR Medium" FontSize="48" Foreground="White" Margin="0,93,0,0" Width="Auto" Height="Auto" HorizontalAlignment="Center" VerticalAlignment="Top"/>
-                <Label Content="For beginner" FontFamily="Noto Sans CJK KR Medium" FontSize="24" Foreground="White" Margin="389,60,0,0" Width="Auto" Height="Auto" HorizontalAlignment="Left" VerticalAlignment="Top"/>
-                <Border CornerRadius="5" Margin="150,179,150,32" Background="#4CFFFFFF" WindowChrome.IsHitTestVisibleInChrome="True">
-                    <Grid FocusManager.FocusedElement="{Binding ElementName=TB_User}">
-                        <Grid.RowDefinitions>
-                            <RowDefinition Height="*"/>
-                            <RowDefinition Height="*"/>
-                            <RowDefinition Height="*"/>
-                            <RowDefinition Height="1.2*"/>
-                        </Grid.RowDefinitions>
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="40"/>
-                            <ColumnDefinition Width="*"/>
-                        </Grid.ColumnDefinitions>
-                        <Label Grid.ColumnSpan="2" Content="{DynamicResource Cultures.LoginWindow.Inform}" Margin="15,0" FontSize="24" HorizontalAlignment="Left" VerticalAlignment="Center" FontWeight="Bold" FontFamily="Noto Sans CJK KR Medium" Foreground="Black" />
-                        <Image Grid.Row="1" Grid.Column="0" Source="/Resources/Images/ico_user.png" Margin="10"/>
-                        <TextBox Grid.Row="1" Grid.Column="1" Name="TB_User" Text="{Binding User}" Margin="5,5,15,0" FontSize="14" 
-                                 Background="#7FFFFFFF" VerticalContentAlignment="Center" Padding="10,0,0,0" 
-                                 IsTabStop="True" TabIndex="1" Focusable="True" sv:EnterKeyTraversal.IsEnabled="True"/>
-                        <Image Grid.Row="2" Grid.Column="0" Source="/Resources/Images/ico_pw.png" Margin="10"/>
-                        <PasswordBox Grid.Row="2" Grid.Column="1" sv:PasswordBoxAssistant.EnableBindingPassword="True" sv:EnterKeyTraversal.IsEnabled="True"
-                                     sv:PasswordBoxAssistant.BoundPassword="{Binding Path=Password, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Margin="5,5,15,0" 
-                                     FontSize="14" Background="#7FFFFFFF" VerticalContentAlignment="Center" Padding="10,0,0,0" IsTabStop="True" TabIndex="2"/>
-                        <Grid Grid.Row="3" Grid.ColumnSpan="2">
-                            <Button Style="{StaticResource LoginButtonStyle}" Content="{DynamicResource Cultures.LoginWindow.LoginButtonText}" Margin="100,5" Background="#FFFF7575" FontSize="14" Foreground="White" FontWeight="Bold"
-                                    Command="{Binding LoginClickCommand}" CommandParameter="{Binding ElementName=root}" IsTabStop="True" TabIndex="3"/>
-                        </Grid>
-                    </Grid>
-                </Border>
-
-                <Label Content="{Binding Message}" FontFamily="Noto Sans CJK KR Medium" FontSize="11" Foreground="Yellow" 
-                       Margin="159,369,0,0" Width="Auto" Height="Auto" HorizontalAlignment="Left" VerticalAlignment="Top" d:Content="ddd"/>
-            </Grid>
-        </Grid>
-    </Border>
-</Window>
--- a/src/WPFEduSolution/WPFBeginner/Views/LoginWindow.xaml.cs
+++ b/src/WPFEduSolution/WPFBeginner/Views/LoginWindow.xaml.cs
@@ -1,15 +0,0 @@
-using System.Windows;
-
-namespace WPFBeginner.Views
-{
-    /// <summary>
-    /// LoginWindow.xaml에 대한 상호 작용 논리
-    /// </summary>
-    public partial class LoginWindow : Window
-    {
-        public LoginWindow()
-        {
-            InitializeComponent();
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Views/MainWindow.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Views/MainWindow.xaml
@@ -1,172 +0,0 @@
-<Window x:Class="WPFBeginner.MainWindow"
-        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:uc="clr-namespace:WPFBeginner.Controls"
-        WindowStyle="None" ResizeMode="CanResize" Name="root"
-        mc:Ignorable="d" Title="MainWindow" Height="500" Width="400" Padding="20">
-    
-    <WindowChrome.WindowChrome>
-        <WindowChrome CaptionHeight="{Binding ElementName=titleBar, Path=ActualHeight}" ResizeBorderThickness="0 5 0 5"/>
-    </WindowChrome.WindowChrome>
-
-    <Window.DataContext>
-        <Binding Source="{StaticResource ViewModelLocator}" Path="MainWindowViewModel"/>
-    </Window.DataContext>
-
-    <Window.Resources>
-        
-        <Style x:Key="SearchButton" TargetType="Button">
-            <Setter Property="Background" Value="{DynamicResource Colors.SearchButton.Background.Normal}"/>
-            <Setter Property="BorderBrush" Value="{DynamicResource Colors.SearchButton.BorderBrush.Normal}"/>
-            <Setter Property="Foreground" Value="{DynamicResource Colors.SearchButton.Foreground.Normal}"/>
-            <Setter Property="BorderThickness" Value="1"/>
-            <Setter Property="Template">
-                <Setter.Value>
-                    <ControlTemplate TargetType="Button">
-                        <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
-                            <ContentControl Content="{TemplateBinding Content}"/>
-                        </Border>
-                        <ControlTemplate.Triggers>
-                            <Trigger Property="IsMouseOver" Value="True">
-                                <Setter Property="Background" Value="{DynamicResource Colors.SearchButton.Background.MouseOver}"/>
-                                <Setter Property="BorderBrush" Value="{DynamicResource Colors.SearchButton.BorderBrush.MouseOver}"/>
-                                <Setter Property="Foreground" Value="{DynamicResource Colors.SearchButton.Foreground.MouseOver}"/>
-                            </Trigger>
-                            <Trigger Property="IsPressed" Value="True">
-                                <Setter Property="Background" Value="{DynamicResource Colors.SearchButton.Background.MousePressed}"/>
-                                <Setter Property="BorderBrush" Value="{DynamicResource Colors.SearchButton.BorderBrush.MousePressed}"/>
-                                <Setter Property="Foreground" Value="{DynamicResource Colors.SearchButton.Foreground.MousePressed}"/>
-                            </Trigger>
-                        </ControlTemplate.Triggers>
-                    </ControlTemplate>
-                </Setter.Value>
-            </Setter>
-        </Style>
-    </Window.Resources>
-    
-    <Grid>
-        <Grid.RowDefinitions>
-            <RowDefinition Height="40"/>
-            <RowDefinition Height="130"/>
-            <RowDefinition Height="*"/>
-        </Grid.RowDefinitions>
-        
-        <!--Title Bar-->
-        <Grid x:Name="titleBar" Background="{DynamicResource Colors.TitleBar.Title.Background}" >
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="*"/>
-                <ColumnDefinition Width="Auto"/>
-            </Grid.ColumnDefinitions>
-            <Label Content="{DynamicResource Cultures.MainWindow.Title}" Foreground="{DynamicResource Colors.TitleBar.Title.Foreground}"
-                   FontSize="14" FontFamily="NanumSquareOTF_ac Bold" VerticalContentAlignment="Center" Padding="10 0"/>
-            <Grid Grid.Column="2">
-                <StackPanel Orientation="Horizontal" WindowChrome.IsHitTestVisibleInChrome="True" VerticalAlignment="Top">
-                    <ToggleButton Width="22" Height="22" Style="{DynamicResource SettingButtonStyle}" Name="bt_settings"/>
-                    <Button Width="39" Height="27" Style="{DynamicResource TiTleBarMinimizeButton}" Command="{Binding MinimizeCommand}" CommandParameter="{Binding ElementName=root}"/>
-                    <Button Width="39" Height="27" Style="{DynamicResource TiTleBarMaximizeButton}" Command="{Binding MaximizeCommad}" CommandParameter="{Binding ElementName=root}"/>
-                    <Button Width="39" Height="27" Style="{DynamicResource TiTleBarCloseButton}" Command="{Binding CloseCommand}" CommandParameter="{Binding ElementName=root}"/>
-                </StackPanel>
-                <Popup PlacementTarget="{Binding ElementName=bt_settings}" Placement="Bottom"  IsOpen="{Binding ElementName=bt_settings, Path=IsChecked}" StaysOpen="False">
-                    <Border Background="{DynamicResource Colors.SettingPopup.Background}" BorderThickness="1" BorderBrush="{DynamicResource Colors.SettingPopup.BorderBrush}" >
-                        <StackPanel Orientation="Vertical" Width="100">
-                            <Grid Margin="5">
-                                <Grid.RowDefinitions>
-                                    <RowDefinition Height="*"/>
-                                    <RowDefinition Height="5"/>
-                                    <RowDefinition Height="*"/>
-                                </Grid.RowDefinitions>
-                                
-                                <StackPanel>
-                                    <RadioButton Content="한글판" Foreground="{DynamicResource Colors.SettingPopup.Foreground}" 
-                                                 GroupName="Cultures" IsChecked="{Binding IsKorean, Mode=OneWay}" Command="{Binding LangueChangeCommand}" CommandParameter="ko-KR"/>
-                                    <RadioButton Content="English" Foreground="{DynamicResource Colors.SettingPopup.Foreground}" 
-                                                 GroupName="Cultures" IsChecked="{Binding IsEnglish, Mode=OneWay}" Command="{Binding LangueChangeCommand}" CommandParameter="en-US"/>
-                                </StackPanel>
-
-                                <StackPanel Grid.Row="2">
-                                    <RadioButton Content="Default" Foreground="{DynamicResource Colors.SettingPopup.Foreground}" GroupName="Themes"
-                                                 IsChecked="{Binding IsDefaultTheme, Mode=OneWay}" Command="{Binding ThemeChangeCommand}" CommandParameter="DefaultTheme"/>
-                                    <RadioButton Content="Light" Foreground="{DynamicResource Colors.SettingPopup.Foreground}" GroupName="Themes"
-                                                 IsChecked="{Binding IsLightTheme, Mode=OneWay}" Command="{Binding ThemeChangeCommand}" CommandParameter="LightTheme"/>
-                                </StackPanel>
-                            </Grid>
-                        </StackPanel>
-                    </Border>
-                </Popup>
-            </Grid>
-        </Grid>
-        <Border  HorizontalAlignment="Stretch" VerticalAlignment="Bottom" BorderThickness="0.5" BorderBrush="{DynamicResource Colors.Section.HorizontalSeperator}"/>
-        
-        <!-- Filter Box -->
-        <Border Grid.Row="1" Padding="0 10" HorizontalAlignment="Right" Width="400" Background="{DynamicResource Colors.Main.Background}">
-            <Grid HorizontalAlignment="Right" Width="400">
-
-                <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="*"/>
-                    <ColumnDefinition Width="Auto"/>
-                </Grid.ColumnDefinitions>
-
-                <uc:MemberInputPanel MemberName="{Binding MemberName}" Call="{Binding Call}"
-                                     EmployeeNo="{Binding EmployeeNo}" Email="{Binding Email}"/>
-
-                <Grid Grid.RowSpan="4" Grid.Column="1">
-                    <Button Margin="3" HorizontalAlignment="Center" VerticalAlignment="Center" Padding="2" Style="{StaticResource SearchButton}" 
-                            Command="{Binding SearchClickCommand}">
-                        <StackPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
-                            <Image Source="/Resources/Images/btn_search_001.png" Stretch="UniformToFill"/>
-                            <Label Content="{DynamicResource Cultures.MainWindow.Button.Search}" 
-                                   Foreground="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType=Button}}"
-                                   HorizontalAlignment="Center" FontFamily="Yu Gothic UI" FontWeight="Bold" FontSize="12" Margin="0" Padding="0"/>
-                        </StackPanel>
-                    </Button>
-                </Grid>
-            </Grid>
-        </Border>
-
-        <Border Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Bottom" BorderThickness="0.5" BorderBrush="{DynamicResource Colors.Section.HorizontalSeperator}"/>
-
-        <!-- Search Result -->
-        <Grid Grid.Row="3" Background="{DynamicResource Colors.Main.Background}">
-            <Grid.RowDefinitions>
-                <RowDefinition Height="50"/>
-                <RowDefinition Height="*"/>
-            </Grid.RowDefinitions>
-
-            <Grid>
-                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="10 5">
-                    <Button Content="{DynamicResource Cultures.MainWindow.Button.Add}" Style="{DynamicResource DataGridEditButtonStyle}" Command="{Binding AddClickCommand}" CommandParameter="{Binding ElementName=root}"/>
-                    <Button Content="{DynamicResource Cultures.MainWindow.Button.Delete}" Style="{DynamicResource DataGridEditButtonStyle}" Command="{Binding DeleteClickCommand}"/>
-                    <Button Content="{DynamicResource Cultures.MainWindow.Button.Init}" Style="{DynamicResource DataGridEditButtonStyle}" Command="{Binding InitClickCommand}"/>
-                </StackPanel>
-            </Grid>
-
-            <DataGrid Grid.Row="1" Margin="5" ItemsSource="{Binding Members}" SelectedItem="{Binding SelectedMember}" AutoGenerateColumns="False" IsReadOnly="True">
-                <DataGrid.Columns>
-                    <DataGridTextColumn Binding="{Binding Name}" Width="*">
-                        <DataGridTextColumn.Header>
-                            <TextBlock Text="{DynamicResource Cultures.MainWindow.DatagGid.Column.Name}" />
-                        </DataGridTextColumn.Header>
-                    </DataGridTextColumn>
-                    <DataGridTextColumn Binding="{Binding Call}" Width="*">
-                        <DataGridTextColumn.Header>
-                            <TextBlock Text="{DynamicResource Cultures.MainWindow.DatagGid.Column.Call}" />
-                        </DataGridTextColumn.Header>
-                    </DataGridTextColumn>
-                    <DataGridTextColumn Binding="{Binding EmployeeNo}" Width="*">
-                        <DataGridTextColumn.Header>
-                            <TextBlock Text="{DynamicResource Cultures.MainWindow.DatagGid.Column.No}" />
-                        </DataGridTextColumn.Header>
-                    </DataGridTextColumn>
-                    <DataGridTextColumn Binding="{Binding EMail}" Width="*">
-                        <DataGridTextColumn.Header>
-                            <TextBlock Text="{DynamicResource Cultures.MainWindow.DatagGid.Column.Email}" />
-                        </DataGridTextColumn.Header>
-                    </DataGridTextColumn>
-                </DataGrid.Columns>
-            </DataGrid>
-        </Grid>
-            
-    </Grid>
-</Window>
--- a/src/WPFEduSolution/WPFBeginner/Views/MainWindow.xaml.cs
+++ b/src/WPFEduSolution/WPFBeginner/Views/MainWindow.xaml.cs
@@ -1,15 +0,0 @@
-using System.Windows;
-
-namespace WPFBeginner
-{
-    /// <summary>
-    /// Interaction logic for MainWindow.xaml
-    /// </summary>
-    public partial class MainWindow : Window
-    {
-        public MainWindow()
-        {
-            InitializeComponent();
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/Views/RegistMemberWindow.xaml
+++ b/src/WPFEduSolution/WPFBeginner/Views/RegistMemberWindow.xaml
@@ -1,46 +0,0 @@
-<Window x:Class="WPFBeginner.Views.RegistMemberWindow"
-        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:uc="clr-namespace:WPFBeginner.Controls"
-        xmlns:bh="clr-namespace:WPFBeginner.Behaviors"
-        WindowStyle="SingleBorderWindow" 
-        xmlns:vm ="clr-namespace:WPFBeginner.ViewModels"
-        mc:Ignorable="d" WindowStartupLocation="CenterOwner" Name="root"
-        Title="" SizeToContent="WidthAndHeight" MinWidth="350" MinHeight="200" d:DesignHeight="200" d:DesignWidth="200"
-        bh:WindowBehavior.HideCloseButton="True">
-    
-    <Window.DataContext>
-        <vm:RegistMemberWindowViewModel />
-    </Window.DataContext>
-    
-    <Border Background="{DynamicResource Colors.Main.Background}" Padding="5">
-        <Grid>
-            <Grid.RowDefinitions>
-                <RowDefinition Height="*"/>
-                <RowDefinition Height="30"/>
-            </Grid.RowDefinitions>
-
-            <uc:MemberInputPanel x:Name="memberPanel"
-                                 MemberName="{Binding MemberName}" 
-                                 Call="{Binding Call}" 
-                                 EmployeeNo="{Binding EmployeeNo}" 
-                                 Email="{Binding Email}"/>
-
-            <Grid Grid.Row="1">
-                <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="*"/>
-                    <ColumnDefinition Width="10"/>
-                    <ColumnDefinition Width="*"/>
-                </Grid.ColumnDefinitions>
-                <Button Content="{DynamicResource Cultures.RegistMemberWindow.RegistButton}" HorizontalAlignment="Stretch" Width="Auto"
-                        Command="{Binding RegistClickCommand}" CommandParameter="{Binding ElementName=root}"/>
-                <Button Grid.Column="2" Content="{DynamicResource Cultures.RegistMemberWindow.CancelButton}" HorizontalAlignment="Stretch" Width="Auto"
-                        Command="{Binding CancelClickCommand}" CommandParameter="{Binding ElementName=root}"/>
-            </Grid>
-            
-        </Grid>
-        
-    </Border>
-</Window>
--- a/src/WPFEduSolution/WPFBeginner/Views/RegistMemberWindow.xaml.cs
+++ b/src/WPFEduSolution/WPFBeginner/Views/RegistMemberWindow.xaml.cs
@@ -1,15 +0,0 @@
-using System.Windows;
-
-namespace WPFBeginner.Views
-{
-    /// <summary>
-    /// RegistMemberWindow.xaml에 대한 상호 작용 논리
-    /// </summary>
-    public partial class RegistMemberWindow : Window
-    {
-        public RegistMemberWindow()
-        {
-            InitializeComponent();
-        }
-    }
-}
--- a/src/WPFEduSolution/WPFBeginner/WPFBeginner.csproj
+++ b/src/WPFEduSolution/WPFBeginner/WPFBeginner.csproj
@@ -1,44 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0-windows</TargetFramework>
-    <Nullable>enable</Nullable>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <UseWPF>true</UseWPF>
-    <StartupObject>WPFBeginner.App</StartupObject>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <None Remove="appsettings.json" />
-    <None Remove="Resources\Images\bg_login.jpeg" />
-    <None Remove="Resources\Images\btn_search_001.png" />
-    <None Remove="Resources\Images\ico_pw.png" />
-    <None Remove="Resources\Images\ico_user.png" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <Content Include="appsettings.json">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <Resource Include="Resources\Images\bg_login.jpeg" />
-    <Resource Include="Resources\Images\btn_search_001.png" />
-    <Resource Include="Resources\Images\ico_pw.png" />
-    <Resource Include="Resources\Images\ico_user.png" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ApplicationDefinition Update="App.xaml">
-      <Generator>MSBuild:Compile</Generator>
-    </ApplicationDefinition>
-  </ItemGroup>
-
-</Project>
--- a/src/WPFEduSolution/WPFEduSolution.sln
+++ b/src/WPFEduSolution/WPFEduSolution.sln
@@ -1,25 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.9.34607.119
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPFBeginner", "WPFBeginner\WPFBeginner.csproj", "{8A5A2302-7A11-434B-8C98-D586BDC85E4C}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{8A5A2302-7A11-434B-8C98-D586BDC85E4C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{8A5A2302-7A11-434B-8C98-D586BDC85E4C}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{8A5A2302-7A11-434B-8C98-D586BDC85E4C}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{8A5A2302-7A11-434B-8C98-D586BDC85E4C}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {65B27DF8-6AA9-4BC1-964B-51069FA5B003}
-	EndGlobalSection
-EndGlobal