too many to add

Hyperbar.Windows/App.xaml.cs

@@ -1,5 +1,4 @@
-using CustomExtensions.WinUI;
-using Hyperbar.Controls.Windows;
+using Hyperbar.Controls.Windows;
 using Hyperbar.UI.Windows;
 using Hyperbar.Widget;
 using Microsoft.Extensions.Configuration;
@@ -9,17 +8,14 @@ using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml;
 using System.Reflection;
 using Hyperbar.Widget.Windows;
+using Microsoft.UI.Xaml.Markup;
 
 namespace Hyperbar.Windows;
 
 public partial class App :
     Application
 {
-    public App()
-    {
-        InitializeComponent();
-        ApplicationExtensionHost.Initialize(this);
-    }
+    public App() => InitializeComponent();
 
     protected override async void OnLaunched(LaunchActivatedEventArgs args)
     {        
@@ -37,6 +33,7 @@ public partial class App :
                 services.AddDefault();
                 services.AddWidget();
                 services.AddWidgetWindows();
+                services.AddXamlMetadataProvider();
 
                 services.AddHostedService<AppService>();
 

Hyperbar.Windows/Lifecycles/IServiceCollectionExtensions.cs

@@ -0,0 +1,26 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Markup;
+using System.Reflection;
+
+namespace Hyperbar.Widget;
+
+public static class IServiceCollectionExtensions
+{ 
+    public static IServiceCollection AddXamlMetadataProvider(this IServiceCollection services)
+    {
+        object? appProvider = Application.Current.GetType().GetProperty("_AppProvider", BindingFlags.NonPublic | BindingFlags.Instance)?
+                .GetValue(Application.Current);
+
+        object? provider = appProvider?.GetType().GetProperty("Provider", BindingFlags.NonPublic | BindingFlags.Instance)?
+            .GetValue(appProvider);
+
+        PropertyInfo? othersProviderProperty = provider?.GetType().GetProperty("OtherProviders", BindingFlags.NonPublic | BindingFlags.Instance,
+            null, typeof(List<IXamlMetadataProvider>), [], null);
+
+        List<IXamlMetadataProvider> xamlMetadataProviders  = othersProviderProperty?.GetValue(provider) as List<IXamlMetadataProvider> ?? [];
+
+        services.AddSingleton<IList<IXamlMetadataProvider>>(xamlMetadataProviders);
+        return services;
+    }
+}