title: Help with Binding tabcontrol that contains a treeview
body: <p>In a silverlight project i have a class:</p>
  
  <pre><code>class Foo{
    List&lt;Bar&gt; Bars;
    string BarName;
  }
  </code></pre>
  
  <p>In my view model, I have:</p>
  
  <pre><code>List&lt;Foo&gt; Foos;
  </code></pre>
  
  <p>My TabControl is bound to Foos, and I'm using a <code>Converter</code> to convert my Foo class to a TabItem, with <code>Header = BarName</code>, and <code>Content = Bars</code></p>
  
  <p>My TabItem's content is just a TreeView, and I'd like to bind the TreeView's ItemSource to <code>Bars</code></p>
  
  <p>However I'm stuck trying to figure this out.</p>