title: asp:dropdown auto complete with pause in typing
body: <p>I have a standard asp:dropdown control, by default this allows the user to type into it and it will auto select the best matched item form the list. They can also drop the list down.</p>
  
  <p>My user is entering a work order number with a pause like this: </p>
  
  <ul>
  <li>Type the first 4 characters</li>
  <li>Refer to a document to lookup the next 4 characters (pause in typing)</li>
  <li>Type in next characters </li>
  </ul>
  
  <p><strong>Example of the asp markup</strong></p>
  
  <pre><code> &lt;asp:DropDownList runat="server" ID="uxWorkOrder" Width="386"&gt;&lt;/asp:DropDownList&gt;
  </code></pre>
  
  <p><strong>Questions</strong></p>
  
  <ol>
  <li><p>With the pause in typing the dropdown only filters on the first 4 characters, what's the best approach to allow the user to pause and continue on?</p></li>
  <li><p>How can the user reset the text to blankwithout using the mouse to scroll to the top 'blank item' (Preferably by pressing the spacebar)? </p></li>
  </ol>