title: FocusNavigationDirection.Next is not moving to Next Control
body: <pre><code>TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);                    
  MoveFocus(request);
  </code></pre>
  
  <p>I am using this code in DataGrid PreviewKeyDown Event and the Focus is not moving to Next Control instead its focus has gone to Two Control previous to DataGrid.</p>