address PR comments

Author: vgromfeld

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -1073,7 +1073,7 @@
         "Name": "ClipToBounds",
         "Type": "ClipToBoundsPage",
         "About": "Extension to clip the UIElement inner controls inside its bounds.",
-        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI/Extensions/FrameworkElement",
+        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI/Extensions/UIElement",
         "XamlCodeFile": "ClipToBoundsCode.bind",
         "Icon": "/Assets/Helpers.png",
         "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/extensions/UIElementExtensions.md"

Microsoft.Toolkit.Uwp.UI/Extensions/UIElement/UIElementExtensions.cs

@@ -37,15 +37,12 @@ public static class UIElementExtensions
 
         private static void OnClipToBoundsPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
         {
-            var element = d as UIElement;
-            if (element is null)
+            if (d is UIElement element)
             {
-                return;
+                var clipToBounds = (bool)e.NewValue;
+                var visual = ElementCompositionPreview.GetElementVisual(element);
+                visual.Clip = clipToBounds ? visual.Compositor.CreateInsetClip() : null;
             }
-
-            var clipToBounds = (bool)e.NewValue;
-            var visual = ElementCompositionPreview.GetElementVisual(element);
-            visual.Clip = clipToBounds ? visual.Compositor.CreateInsetClip() : null;
         }
     }
 }