title: Enable scroll for WPF Treeview
body: <p>Can anybody help me out with how to enable a treeview to scroll? There must be a simple way but I can't make it work in my code. After multiple failed tries, I currently have something like this:</p>
  
  <pre><code>        &lt;ScrollViewer CanContentScroll="True"&gt;
             &lt;TreeView ...&gt;
             &lt;/TreeView&gt;
          &lt;/ScrollViewer&gt;
  </code></pre>
  
  <p>I do see an 'disabled' scrollbar, but when the notes of the treeview are larger than the screen height, no scrolling is activated. </p>