title: Gridview with Ajax Toolkit CalendarExtender not displaying in Edit Template
body: <p>I have the folling Gridview column</p>
  
  <pre><code>&lt;asp:TemplateField HeaderText="Installed Date" SortExpression="install_date"&gt;
      &lt;EditItemTemplate&gt;
          &lt;asp:TextBox ID="gvtxtInstalledDate" runat="server" 
              Text='&lt;%# Bind("install_date") %&gt;'&gt;&lt;/asp:TextBox&gt;
          &lt;asp:CalendarExtender ID="gvtxtInstalledDate_CalendarExtender" runat="server" 
              Enabled="True" TargetControlID="gvtxtInstalledDate"&gt;
          &lt;/asp:CalendarExtender&gt;
      &lt;/EditItemTemplate&gt;
      &lt;ItemTemplate&gt;
          &lt;asp:Label ID="gvlblInstallDate" runat="server" 
              Text='&lt;%# Bind("install_date") %&gt;'&gt;&lt;/asp:Label&gt;
      &lt;/ItemTemplate&gt;
  &lt;/asp:TemplateField&gt;
  </code></pre>
  
  <p>The Calendar extender does not display at all when editing a row item.</p>
  
  <p>EDIT: Doesnt work on any other control either. I do have a script manager in place. The ASP Toolkit is also a part of my website reference.</p>