title: Telerik Radcombobox.SelectedValue not working
body: <p>I am trying to populate my telerik dropdown on page load.  I am using the following code for this:</p>
  
  <p><code>ddIntervention.SelectedValue=3</code></p>
  
  <p>The RadComboBox is inside two update panels. </p>
  
  <p>aspx page:</p>
  
  <pre><code>&lt;telerik:RadComboBox ID="ddIntervention" runat="server" DataSourceID="SqlDataSource3" 
   DataTextField="ProcedureDesc" MaxHeight="180px" Filter="Contains" 
   DataValueField="ProcedureID" HighlightTemplatedItems="True" MarkFirstMatch="True" 
   Width="350px" EmptyMessage="Search By Intervention Name" EnableAutomaticLoadOnDemand="True" 
   ShowMoreResultsBox="True" EnableVirtualScrolling="True" ItemsPerRequest="10" 
   DropDownWidth="350px" AutoPostBack="True" CausesValidation="False" 
   ResolvedRenderMode="Classic"  AllowCustomText="true"&gt;
  &lt;/telerik:RadComboBox&gt;
  
  
  &lt;asp:SqlDataSource ID="SqlDataSource3" runat="server" 
   ConnectionString="&lt;%$ ConnectionStrings:ConnectionString %&gt;" 
   SelectCommand="SELECT [ProcedureID], [ProcedureDesc], [DateDeleted] FROM 
   [Vw_UploadRef_Procedures] WHERE ([DateDeleted] IS NULL)
  &lt;/asp:SqlDataSource&gt;
  </code></pre>