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Attaches a MouseEnter Event Handler to a TextBlock Silverlight Control

<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">         <TextBlock x:Name="myText"                    Text="Mouse is Gone"                    MouseEnter="MouseEnterHandler"/>      </Grid>   </UserControl> //File: Page.xaml.cs  using System;  using System.Windows;  using System.Windows.Controls;  using System.Windows.Input;  namespace SilverlightApplication3  {      public partial class MainPage : UserControl       {          public MainPage()           {              InitializeComponent();              myText.MouseLeave += new MouseEventHandler(myText_MouseLeave);           }          private void MouseEnterHandler(object sender, MouseEventArgs e)           {              var txtBlock = sender as TextBlock;              txtBlock.Text = "Mouse at " + e.GetPosition(LayoutRoot).ToString();              txtBlock.FontSize = 20;           }          void myText_MouseLeave(object sender, MouseEventArgs e)           {              myText.Text = "Mouse is Gone";              myText.FontSize = 10;           }       }  }