title: Binding with StringFormat on Windows Phone 7?
body: <p>I'm doing some Windows Phone 7 development and want to format a string I've bound to.</p>
  
  <p>For some reason I cannot use the StringFormat like shown below. The option just isn't there.</p>
  
  <pre><code> &lt;TextBlock Text="{Binding Distance, StringFormat=\{0\}km}" /&gt;
  </code></pre>
  
  <p>Why isn't the StringFormat available for Windows Phone 7?</p>