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Update Z Index

<UserControl x:Class='SilverlightApplication3.MainPage'     xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'      xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'     xmlns:d='http://schemas.microsoft.com/expression/blend/2008'      xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'      mc:Ignorable='d'      d:DesignWidth='640' d:DesignHeight='480'>     <Grid x:Name="LayoutRoot" Background="White">         <Canvas x:Name="myCanvas">             <Canvas Canvas.ZIndex="2" Width="60" Height="60" Background="LightGray"/>             <Canvas Canvas.ZIndex="1" Width="60" Height="60" Canvas.Left="20" Canvas.Top="20" Background="Gray" />             <Canvas x:Name="myElement" Width="60" Height="60" Canvas.Left="40" Canvas.Top="40" Background="Black"/>         </Canvas>     </Grid> </UserControl> //File: Page.xaml.cs using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using System.Windows.Browser; namespace SilverlightApplication3 {     public partial class MainPage : UserControl     {         public MainPage()         {             InitializeComponent();             HtmlPage.RegisterScriptableObject("bridge", this);         }         [ScriptableMember]         public void UpdateZIndex()         {             int newZIndex = Canvas.GetZIndex(myElement) + 10;             Canvas.SetZIndex(myElement, newZIndex);         }     } }