title: Windows Runtime: How to set image in a ellipse shape button?
body: <pre><code>&lt;Button x:Name="btnProfilePicture" HorizontalAlignment="Center" Click="btnProfilePicture_Click"&gt;
      &lt;Button.Template&gt;
          &lt;ControlTemplate&gt;
              &lt;Ellipse x:Name="ellipsePicture" Fill="Turquoise" Width="150" Height="150" Stroke="White" StrokeThickness="10"&gt;
              &lt;/Ellipse&gt;
          &lt;/ControlTemplate&gt;
      &lt;/Button.Template&gt;
  &lt;/Button &gt;
  </code></pre>
  
  <p>I have a button in ellipse shape, with color fill by default.
  I want to change the fill to an image in code-behind in runtime. </p>
  
  <p>How can I do this?</p>
  
  <p>More info: 
  I tried to set the ellipse fill by using the "ellipsePicture" name but this name cannot be referenced in the code behind but I dont know the reason.</p>