Quick fix for Release mode in Sample App for new ItemsRepeater Layout

Author: michael-hawker

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/StaggeredLayout/StaggeredLayoutPage.xaml

@@ -4,11 +4,12 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="using:Microsoft.Toolkit.Uwp.SampleApp.SamplePages.StaggeredLayout"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+    xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
     mc:Ignorable="d"
     Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
 
-    <Grid>
-
-    </Grid>
+    <Page.Resources>
+        <controls:StaggeredLayout x:Key="WrapLayoutPlaceholder"/>
+    </Page.Resources>
 </Page>

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/WrapLayout/WrapLayoutPage.xaml

@@ -5,11 +5,11 @@
     xmlns:local="using:Microsoft.Toolkit.Uwp.SampleApp.SamplePages.WrapLayout"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:winui="using:Microsoft.UI.Xaml.Controls"
+    xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
     mc:Ignorable="d"
     Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
 
-    <Grid>
-
-    </Grid>
+    <Page.Resources>
+        <controls:WrapLayout x:Key="WrapLayoutPlaceholder"/>
+    </Page.Resources>
 </Page>