NeverMorewd · Aug 31, 2026 · Aug 31, 2026
diff --git a/samples/Directory.Packages.props b/samples/Directory.Packages.props
@@ -14,17 +14,13 @@
     <PackageVersion Include="Avalonia.Browser" Version="$(AvaloniaVersion)" />
     <PackageVersion Include="Avalonia.Android" Version="$(AvaloniaVersion)" />
     <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.3" />
-    <PackageVersion Include="ReactiveUI.WinUI" Version="23.2.28" />
+    <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageVersion Include="SkiaSharp" Version="$(SkiaSharpVersion)" />
     <PackageVersion Include="SkiaSharp.NativeAssets.WebAssembly" Version="$(SkiaSharpVersion)" />
     <PackageVersion Include="Xamarin.AndroidX.Core.SplashScreen" Version="1.2.0.2" />
-    <PackageVersion Include="ReactiveUI.Avalonia" Version="12.1.0" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.6" />
     <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.3.1" />
     <PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.28000.2526" />
     <PackageVersion Include="Pipboy.Avalonia" Version="1.0.0" />
-    <PackageVersion Include="ReactiveUI" Version="23.2.28" />
-    <PackageVersion Include="ReactiveUI.SourceGenerators" Version="2.5.1" />
-    <PackageVersion Include="ReactiveUI.WPF" Version="23.2.28" />
   </ItemGroup>
-</Project>
+</Project>
diff --git a/samples/Sample.Avalonia.Android/Application.cs b/samples/Sample.Avalonia.Android/Application.cs
@@ -2,7 +2,6 @@
 using Android.Runtime;
 using Avalonia;
 using Avalonia.Android;
-using ReactiveUI.Avalonia;
 
 namespace Sample.Avalonia.Android;
 
@@ -14,6 +13,6 @@ protected Application(nint javaReference, JniHandleOwnership transfer) : base(ja
     }
     protected override AppBuilder CustomizeAppBuilder(AppBuilder builder)
     {
-        return base.CustomizeAppBuilder(builder).UseReactiveUI(_ => { });
+        return base.CustomizeAppBuilder(builder);
     }
 }
diff --git a/samples/Sample.Avalonia.Browser/Program.cs b/samples/Sample.Avalonia.Browser/Program.cs
@@ -1,6 +1,5 @@
 using Avalonia;
 using Avalonia.Browser;
-using ReactiveUI.Avalonia;
 using Sample.Avalonia;
 using System.Runtime.Versioning;
 using System.Threading.Tasks;
@@ -11,9 +10,8 @@ internal sealed partial class Program
 {
     private static Task Main(string[] args) => BuildAvaloniaApp()
             .WithInterFont()
-            .UseReactiveUI(_ => { })
             .StartBrowserAppAsync("out");
 
     public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>();
-}
+}
diff --git a/samples/Sample.Avalonia.Desktop/Program.cs b/samples/Sample.Avalonia.Desktop/Program.cs
@@ -1,5 +1,4 @@
 using Avalonia;
-using ReactiveUI.Avalonia;
 using System;
 using System.Runtime.InteropServices;
 
@@ -21,9 +20,8 @@ public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>()
             .UsePlatformDetect()
             .WithInterFont()
-            .UseReactiveUI(_ => { })
             .LogToTrace();
 
     [DllImport("kernel32", SetLastError = true, CharSet = CharSet.Unicode)]
     private static extern bool SetDllDirectory(string lpPathName);
-}
+}
diff --git a/samples/Sample.Avalonia.iOS/AppDelegate.cs b/samples/Sample.Avalonia.iOS/AppDelegate.cs
@@ -1,7 +1,6 @@
 using Avalonia;
 using Avalonia.iOS;
 using Foundation;
-using ReactiveUI.Avalonia;
 
 namespace Sample.Avalonia.iOS;
 
@@ -16,7 +15,6 @@ public partial class AppDelegate : AvaloniaAppDelegate<App>
     protected override AppBuilder CustomizeAppBuilder(AppBuilder builder)
     {
         return base.CustomizeAppBuilder(builder)
-            .WithInterFont()
-            .UseReactiveUI(_ => { });
+            .WithInterFont();
     }
 }
diff --git a/samples/Sample.Avalonia/Sample.Avalonia.csproj b/samples/Sample.Avalonia/Sample.Avalonia.csproj
@@ -26,7 +26,6 @@
 		<PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
 	</PackageReference>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
-    <PackageReference Include="ReactiveUI.Avalonia" />
   </ItemGroup>
 
   <ItemGroup>

diff --git a/samples/Sample.Common/ChildContentRegionViewModel.cs b/samples/Sample.Common/ChildContentRegionViewModel.cs
@@ -1,5 +1,5 @@
 using AsyncNavigation.Abstractions;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.Input;
 
 namespace Sample.Common;
 
@@ -11,13 +11,13 @@ public ChildContentRegionViewModel(IRegionManager regionManager)
         _regionManager = regionManager;
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncNavigate(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);
         await _regionManager.RequestNavigateAsync("ChildContentRegion", viewName, parameters);
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private Task UnloadView(string param)
     {
         return RequestUnloadAsync(CancellationToken.None);

diff --git a/samples/Sample.Common/FrontDialogViewModel.cs b/samples/Sample.Common/FrontDialogViewModel.cs
@@ -1,17 +1,18 @@
 using AsyncNavigation.Abstractions;
 using AsyncNavigation.Core;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
 
 namespace Sample.Common;
 public partial class FrontDialogViewModel : InstanceCounterViewModel<FrontDialogViewModel>, IDialogAware
 {
-    [Reactive]
+    [ObservableProperty]
     private int _ratio;
     private CancellationTokenSource? _cts;
     public event AsyncEventHandler<DialogCloseEventArgs>? RequestCloseAsync;
     public string Title => $"{nameof(LightViewModel)}:{InstanceNumber}";
 
-    [ReactiveCommand]
+    [RelayCommand]
     private Task CloseDialog(string param)
     {
         if (RequestCloseAsync != null)

diff --git a/samples/Sample.Common/HeavyViewModel.cs b/samples/Sample.Common/HeavyViewModel.cs
@@ -1,7 +1,7 @@
 using AsyncNavigation;
 using AsyncNavigation.Abstractions;
 using AsyncNavigation.Core;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.Input;
 using System.Collections.ObjectModel;
 
 namespace Sample.Common;
@@ -19,13 +19,13 @@ public ObservableCollection<byte> HeavyItems
 
     public event AsyncEventHandler<DialogCloseEventArgs>? RequestCloseAsync;
 
-    [ReactiveCommand]
+    [RelayCommand]
     private Task UnloadView(string param)
     {
         return RequestUnloadAsync(CancellationToken.None);
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private Task CloseDialog(string param)
     {
         return RequestCloseAsync!.Invoke(this, 

diff --git a/samples/Sample.Common/InfinityViewModel.cs b/samples/Sample.Common/InfinityViewModel.cs
@@ -1,18 +1,17 @@
 using AsyncNavigation;
 using AsyncNavigation.Abstractions;
-using ReactiveUI;
-using ReactiveUI.SourceGenerators;
-using System.Reactive.Concurrency;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
 
 namespace Sample.Common;
 
 public partial class InfinityViewModel : InstanceCounterViewModel<InfinityViewModel>
 {
-    [Reactive]
+    [ObservableProperty]
     private string _nextRegionName = "";
-    [Reactive]
+    [ObservableProperty]
     private string _buttonText = "Next";
-    [Reactive]
+    [ObservableProperty]
     private bool _isActive = true;
     private readonly IRegionManager _regionManager;
 
@@ -22,7 +21,7 @@ public InfinityViewModel(IRegionManager regionManager)
         _regionManager = regionManager;
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncNavigate(string param)
     {
         await _regionManager.RequestNavigateAsync(NextRegionName, param);

diff --git a/samples/Sample.Common/ItemsRegionViewModel.cs b/samples/Sample.Common/ItemsRegionViewModel.cs
@@ -1,7 +1,6 @@
 using AsyncNavigation;
 using AsyncNavigation.Abstractions;
-using ReactiveUI;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.Input;
 using System.Diagnostics;
 
 namespace Sample.Common;
@@ -13,14 +12,14 @@ public ItemsRegionViewModel(IRegionManager regionManager)
     {
         _regionManager = regionManager;
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncNavigate(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);
         var ret = await _regionManager.RequestNavigateAsync("ItemsRegion", viewName, parameters);
         Debug.WriteLine(ret);
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private Task AsyncNavigateAndForget(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);
@@ -31,7 +30,7 @@ private Task AsyncNavigateAndForget(string param)
         });
         return Task.CompletedTask;
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private Task UnloadView(string param)
     {
         return RequestUnloadAsync(CancellationToken.None);

diff --git a/samples/Sample.Common/LightViewModel.cs b/samples/Sample.Common/LightViewModel.cs
@@ -1,6 +1,6 @@
 using AsyncNavigation.Abstractions;
 using AsyncNavigation.Core;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.Input;
 
 namespace Sample.Common;
 
@@ -20,33 +20,33 @@ public LightViewModel(IRegionManager regionManager)
     }
 
 
-    [ReactiveCommand]
+    [RelayCommand]
     private Task UnloadView(string param)
     {
         return RequestUnloadAsync(CancellationToken.None);
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private Task CloseDialog(string param)
     {
         return RequestCloseAsync!.Invoke(this, 
             new DialogCloseEventArgs(new DialogResult(DialogButtonResult.OK), 
             CancellationToken.None));
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private Task CloseDialogWithCancelling(string param)
     {
         var cts = new CancellationTokenSource();
         cts.CancelAfter(TimeSpan.FromSeconds(2));
         return RequestCloseAsync!.Invoke(this, new DialogCloseEventArgs(new DialogResult(DialogButtonResult.OK), cts.Token));
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncPageNavigate(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);
         var ret = await _regionManager.RequestNavigateAsync("NavigationPageRegion", viewName);
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncTabbedPageNavigate(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);

diff --git a/samples/Sample.Common/ListBoxRegionViewModel.cs b/samples/Sample.Common/ListBoxRegionViewModel.cs
@@ -1,5 +1,5 @@
 using AsyncNavigation.Abstractions;
-using ReactiveUI.SourceGenerators;
+using CommunityToolkit.Mvvm.Input;
 
 namespace Sample.Common;
 
@@ -10,20 +10,20 @@ public ListBoxRegionViewModel(IRegionManager regionManager)
     {
         _regionManager = regionManager;
     }
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task AsyncNavigate(string param)
     {
         var (viewName, parameters) = SampleHelper.ParseNavigationParam(param);
         await _regionManager.RequestNavigateAsync("CustomListBoxRegion", viewName, parameters);
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task GoForward()
     {
         await _regionManager.GoForwardAsync("CustomListBoxRegion");
     }
 
-    [ReactiveCommand]
+    [RelayCommand]
     private async Task GoBack()
     {
         await _regionManager.GoBackAsync("CustomListBoxRegion");