Editing a Grouping Grid with LinqDataSource and ListView Controls

[sanndeb]

Hi i found this article to build nested lists....

http://mattberseth.com/blog/2008/01/building_a_grouping_grid_with.html

But the problem is now i don't know how to enable the inner list for editing, i have given the inner list a editingitemtemp late, but clicking on the edit button does nothing but a normal postback.

<EditItemTemplate>
       <tr id="row" runat="server">
       <td><%# Eval("orderid") %></td>
           <td><%# Eval("orderdate", "{0:MM/dd/yyyy}")%></td>
           <td><%# Eval("requireddate", "{0:MM/dd/yyyy}")%></td>
           <td><asp:TextBox runat="server" ID="txtF" Text='<%# Eval("freight", "{0:c}") %>'></asp:TextBox></td>
           <td><%# Eval("requireddate", "{0:MM/dd/yyyy}")%></td>
       </tr>
</EditItemTemplate>

protected void lv_ItemEditing(object sender, ListViewEditEventArgs e)
{
  ListView lv = sender as ListView;
  lv.EditIndex = e.NewEditIndex;
}

Also I want to know how to implement this tenique to group data from more than one table.