title: ASP.NET AJAX's Combobox - Cannot Programatically Change the Selected Item
body: <p>I'm using the new Microsoft ASP.NET Ajax ComboBox control in my web application, and I'm having trouble figuring out how to programmatically set the selected list item. For example, I have a form to accept addresses and a ComboBox to accept a city name. After the user enters and saves and address, I'd like to reset the form, including the ComboBoxes.</p>
  
  <p>With a regular ASP.NET dropdownlist control I can reset the selected item like below:</p>
  
  <pre><code>City.SelectedIndex = -1;
  </code></pre>
  
  <p>The ASP.NET AJAX ComboBox control accepts this line of code; but when the page posts back, the previously selected value is still selected. Help would be appreciated.</p>
  
  <p>Update: I tried the following to no avail...</p>
  
  <pre><code>City.ClearSelection();
  </code></pre>