title: Change focus by Enter don't work with Telerik RadDropDownList
body: <p>I used following code to change the tab order by pressing Enter key , and it works great on any objects of my form.But when I changed the AutoCompleteMode property of my RadDropDownList to "SuggestAppend" , then
  when I press Enter on RaddropDown the tab order not changed and it stay on this control !!!! plz help to handle this problem.</p>
  
  <pre><code>protected override bool ProcessKeyPreview(ref Message m)
          {
              if (m.Msg == 0x0100 &amp;&amp; (int)m.WParam == 13)
              {
                  this.ProcessTabKey(true);
              }
    return base.ProcessKeyPreview(ref m);
      }
  </code></pre>