Hi Manish,

Thanks for the reply but it still did not trigger. If you can take a look at
the sample code and let me know that will be helpful.

<asp:GridView ID="GridView1" runat="server" .....
 OnRowDataBound="GridView1_OnRowDataBound"
OnRowCreated="GridView1_OnRowCreated">
<Columns>
 <asp:BoundField HeaderText="Order ID" DataField="OrderID" />
 <asp:TemplateField>
  <ItemTemplate>
   <asp:TreeView ID="LinksTreeView" Font-Names="Arial" ForeColor="Blue"
    runat="server" ShowCheckBoxes="All"
    >
   </asp:TreeView>
  </ItemTemplate>
 </asp:TemplateField>
</Columns>
</asp:GridView>

Dynamic Populating the TreeView in Databound....

protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs
e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
 System.Web.UI.WebControls.TreeView myTreeView =
  e.Row.FindControl("LinksTreeView") as System.Web.UI.WebControls.TreeView;
 TreeNode myParentNode = new TreeNode();
 myParentNode.Text = e.Row.Cells[0].Text;
 myParentNode.Value = e.Row.Cells[0].Text;
 myParentNode.SelectAction = TreeNodeSelectAction.Expand;
 myParentNode.CollapseAll();
 myTreeView.Nodes.Add(myParentNode);
 PopulateOrderDetails(myParentNode);
}
}

protected void GridView1_OnRowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
 System.Web.UI.WebControls.TreeView tv = new
System.Web.UI.WebControls.TreeView();
 tv =
(System.Web.UI.WebControls.TreeView)e.Row.FindControl("LinksTreeView");
 tv.TreeNodeCheckChanged += new
TreeNodeEventHandler(tv_TreeNodeCheckChanged);
}
}

void tv_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
{
Response.Write(e.Node.Text);
}

I have tried to test the handler in both OnRowCreated and OnRowDataBound but
it does not work either way...

Thanks,
Stephen