using-avalonia-collectionview

# 6.7 MVVM Pattern with CollectionView **⚠️ Important: AvaloniaUI does not support WPF's CollectionViewSource.** ## Project Structure The templates folder contains a .NET 9 AvaloniaUI project example. ``` templates/ ├── AvaloniaCollectionViewSample.Core/ ← Pure C# models and interfaces │ ├── Member.cs │ ├── IMemberCollectionService.cs │ └── AvaloniaCollectionViewSample.Core.csproj ├── AvaloniaCollectionViewSample.ViewModels/ ← ViewModel (no Avalonia references) │ ├── MainViewModel.cs │ ├── GlobalUsings.cs │ └── AvaloniaCollectionViewSample.ViewModels.csproj ├── AvaloniaCollectionViewSample.AvaloniaServices/ ← Avalonia Service Layer │ ├── MemberCollectionService.cs │ ├── GlobalUsings.cs │ └── AvaloniaCollectionViewSample.AvaloniaServices.csproj └── AvaloniaCollectionViewSample.App/ ← Avalonia Application ├── Views/ │ ├── MainWindow.axaml │ └── MainWindow.axaml.cs ├── App.axaml ├── App.axaml.cs ├── Program.cs ├── GlobalUsings.cs └── AvaloniaCollectionViewSample.App.csproj ``` In AvaloniaUI, use the following approaches: #### 6.7.1 Using DataGridCollectionView (Recommended) ```csharp // NuGet: Avalonia.Controls.DataGrid // Service Layer namespace MyApp.Services; using Avalonia.Controls; public sealed class MemberCollectionService { private ObservableCollection<Member> Source { get; } = []; // Returns DataGridCollectionView public IEnumerable CreateView(Predicate<Member>? filter =...