Question

I have the following structure in an aspx page:

<asp:Panel ID='pnlCust' runat='server'>     <asp:GridView ID='gvMaster' runat='server'                    OnRowCreated='gvMaster_RowCreated'>         <Columns>             <asp:TemplateField>                 <ItemTemplate>                     <asp:Panel ID='pnlMaster' runat='server'>                         //...                     </asp:Panel>                     <asp:Panel ID='pnlDetails' runat='server'>                         <asp:GridView ID='gvDetails' runat='server'>                             <Columns>                                 //...                             </Columns>                         </asp:GridView>                     </asp:Panel>                 </ItemTemplate>             </asp:TemplateField>         </Columns>     </asp:GridView> </asp:Panel> 

The panels are used for the CollapsiblePanelExtender from the Ajax Control Toolkit.

I am trying to use FindControl to find the gvDetails control in code-behind, but my latest attempt has not worked, which is in the gvMaster_RowCreated event:

GridView gv =   e.Row.FindControl('pnlDetails').FindControl('gvDetails') as GridView; 

where e is GridViewRowEventArgs

I am basically doing what was on this page, but I am not using a SqlDataSource, however, the person is basically finding the SqlDataSource via the FindControl from the e argument passed in from the RowCreated event. Here is the link:

http://mosesofegypt.net/post/2008/02/Building-a-grouping-Grid-with-GridView-and-ASPNET-AJAX-toolkit-CollapsiblePanel.aspx

Answer 1

Here is a code behind method which worked for me:

protected void gvMaster_RowCreated(object sender, GridViewRowEventArgs e) {     if (e.Row.RowType == DataControlRowType.DataRow) {         GridView gv = (GridView)e.Row.FindControl('gvDetails');     } } 

Is your app throwing an exception? What is not working properly?