A C# task manager with a graphical interface (WPF). Data is stored locally in SQLite via Entity Framework Core.
A graphical interface with a dark theme (Catppuccin-inspired color palette).
- Add, edit, and delete tasks via a dialog window
- Filter tasks: All / Active / Completed
- Priority levels: Low / Medium / High with color indicators
- Task statistics with completion percentage
- Confirmation dialog before deleting
- Dark theme (Catppuccin-inspired color palette)
Screenshots:
| Area | Technologies |
|---|---|
| Language | C# (.NET 10) |
| UI | WPF (Windows Presentation Foundation) |
| ORM | Entity Framework Core 10 |
| Database | SQLite |
| Patterns | Repository pattern, separation of concerns |
| Testing | xUnit, EF Core InMemory |
TaskFlow/
├── WpfTaskFlow/ ← Main application
│ ├── Models/
│ │ └── TaskItem.cs # Entity model
│ ├── Data/
│ │ └── AppDbContext.cs # EF Core DB context
│ ├── Repository/
│ │ └── TaskRepository.cs # All database logic
│ ├── ViewModels/
│ │ ├── MainViewModel.cs # Main MVVM ViewModel
│ │ ├── TaskViewModel.cs # Display model for ListView
│ │ └── RelayCommand.cs # ICommand implementation
│ ├── MainWindow.xaml # Main application window
│ ├── TaskDialog.xaml # Add / Edit task dialog
│ └── App.xaml
└── TaskFlow.Tests/ ← Unit tests
└── TaskRepositoryTests.cs # 19 tests for TaskRepository
MVVM pattern — MainViewModel implements INotifyPropertyChanged and exposes ICommand bindings. MainWindow.xaml.cs contains no business logic — only DataContext = new MainViewModel().
RelayCommand — a generic ICommand implementation that accepts Action and Func lambdas, keeping ViewModel code clean without third-party libraries.
Repository pattern — all database logic lives in TaskRepository. The UI layer never touches the database directly.
Entity Framework Core + SQLite — the database file (taskflow.db) is created automatically on first run via EnsureCreated(). No manual SQL required.
Unit tests — TaskRepository is covered by 19 xUnit tests using an EF Core InMemory database. Each test gets a clean isolated database instance via Guid.NewGuid() as the database name.
WPF dialog window — TaskDialog is reused for both creating new tasks and editing existing ones. When editing, it pre-fills the fields with the current task data.
Open WpfTaskFlow/WpfTaskFlow.sln in Visual Studio and press F5.
Or via CLI:
dotnet run --project WpfTaskFlow/WpfTaskFlowA pet project built to demonstrate C# desktop development with WPF, MVVM, Entity Framework Core, and unit testing.