title: Default value at design time XAML
body: <p>I have a binded <code>TextBlock</code>, XAML:</p>
  
  <pre><code>&lt;TextBlock Text="{Binding MyText}"/&gt;
  </code></pre>
  
  <p>I know the <code>FallbackValue</code> can be used if the Binding isn't available, but this happens at run time ? Is there any way to show a default value at design time ? It would make things easier if I could see a value when designing my windows instead of an empty <code>TextBlock</code>.</p>
  
  <p>Thanks</p>