title: Howto overlay a image on grid?
body: <p>I want to overlay a image on grid. the code like this:</p>
  
  <pre><code>&lt;Grid&gt;
  &lt;UniformGrid&gt;
      &lt;control:ImageButton Width="150" Height="150" Image="/MyStyle;component/Resources/Button1.png" Tag="Playlists" Click="Button_Click" /&gt;
      &lt;control:ImageButton Width="150" Height="150" Image="/MyStyle;component/Resources/Button2.png" Tag="Now Playing" Click="Button_Click" /&gt;
      &lt;control:ImageButton Width="150" Height="150" Image="/MyStyle;component/Resources/Button3.png" Tag="Artists" Click="Button_Click" /&gt;
      &lt;control:ImageButton Width="150" Height="150" Image="/MyStyle;component/Resources/Button4.png" Tag="Genius Mixes" Click="Button_Click" /&gt;
  &lt;/UniformGrid&gt;
  &lt;Border&gt;
      &lt;Border.Background&gt;
          &lt;ImageBrush ImageSource="/MyStyle;component/Resources/reflect.png" /&gt;
      &lt;/Border.Background&gt;
  &lt;/Border&gt;
  </code></pre>
  
  <p></p>
  
  <p>the question is, the button cannot get any messages, how can solve this problem?<br />
  any idea? thanks.</p>