title: Autocomplete extender not working inside modal popup extender
body: <p>I am opening a popup in which I have a textbox. I want to use Ajax autocomplete extebder for this textbox. But it's not able to call the webservice method for autocompletion. Can't understand weather it's a problem of postback or updatepanel.</p>
  
  <p>Where I should use the update panel? My page containing popup div is already inside "updatepanel1".</p>
  
  <p>Code snap is given below. Help Me...</p>
  
  <pre><code> &lt;asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional"   ChildrenAsTriggers="false" &gt;
  
      &lt;asp:TextBox ID="txtEditMPName" runat="server" Width="408px" AutoPostBack="true"        BackColor="#CCFFFF" OnTextChanged="txtEditMPName_TextChanged"&gt;
      &lt;cc1:AutoCompleteExtender ID="ace2" runat="server" BehaviorID="autoSuggest" 
    DelimiterCharacters="" Enabled="true" MinimumPrefixLength="1" ServiceMethod="GetParty" CompletionInterval="10" EnableCaching="true"   CompletionSetCount="1" OnClientShown="ShowOptions"
    TargetControlID="txtEditMPName" FirstRowSelected="True" CompletionListCssClass="AutoCompleteCompletionList" CompletionListHighlightedItemCssClass="AutoCompleteCompletionListHighlightedItem" CompletionListItemCssClass="AutoCompleteCompletionListItem"&gt;
      &lt;Triggers&gt;
        &lt;asp:AsyncPostBackTrigger ControlID="txtEditMPName" EventName="TextChanged" /&gt;
      &lt;/Triggers&gt;
    &lt;/asp:UpdatePanel&gt;
  </code></pre>