title: UltraComboEditor - Infragistics control
body: <p>I have an UltraComboEditor (Infragistics control) and the user can input values on it. I used the AutoComplete property to do that.</p>
  
  <p>But now I have a problem. I need to make sure that my user can delete a value that he wrote. I use the function canUndo but it not works.</p>
  
  <p>How can I solve my problem?</p>
  
  <p>Thank you.</p>