Move

BlazorDemo.Web/Pages/Dialogs.razor

@@ -75,4 +75,13 @@
 
         _saveFileDialogOptions = null;
     }
+
+    protected override void OnAfterRender(bool firstRender)
+    {
+        if (firstRender)
+        {
+            Avalonia.AvaloniaLocator.CurrentMutable.Bind<IDialogService>().ToConstant(this);
+        }
+        base.OnAfterRender(firstRender);
+    }
 }

BlazorDemo.Web/Pages/Index.razor

@@ -1,19 +1,5 @@
 @page "/"
 
-<Dialogs @ref=_dialogs />
+<Dialogs />
 
 <AvaloniaView />
-
-@code {
-
-    private Dialogs? _dialogs;
-
-    protected override void OnAfterRender(bool firstRender)
-    {
-        if (firstRender && _dialogs is { })
-        {
-            Avalonia.AvaloniaLocator.CurrentMutable.Bind<IDialogService>().ToConstant(_dialogs);
-        }
-        base.OnAfterRender(firstRender);
-    }
-}