How do I add nested grids in radgrid?

[Felice]

I can do this in a normal asp grid but I do not know how to achieve the same with radgrid.

In a asp grid I add nested grids like this:

<asp:TemplateField>
    <ItemTemplate>
        <asp:GridView ID="secondLevelGrid"  runat="server" AutoGenerateColumns="false" CssClass="ChildGrid" OnRowDataBound="secondLevelGrid_OnRowDataBound">
                    <Columns>

                        <%--My new nested  grid goes here--%>

                        <asp:BoundField DataField="Id" HeaderText="Id" />
                        <asp:BoundField DataField="Code" HeaderText="Code" />
                        <asp:BoundField DataField="Quantity" HeaderText="Q.ty" />
                        </Columns>
            </asp:GridView>
    </ItemTemplate>
</asp:TemplateField>

How do I make the above in a radgrid considering that I have 7 level nested grids?

protected void firstLevelGrid_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        GridView firstLevelGrid = e.Row.NamingContainer as GridView;
        string code = firstLevelGrid.DataKeys[e.Row.RowIndex].Value.ToString();
        GridView secondLevelGridView = e.Row.FindControl("secondLevelGrid") as GridView;
        secondLevelGridView.DataSource = //GetData
        secondLevelGridView.DataBind();
    }
}

How do I make the equivalent of the OnRowDataBound for each nested grid in RadGrid?

Thanks for helping. If someone could please show me how to achieve the above in RadGrid then I will add the additional six level nesting I need. Thanks

[Pavlina]

Hi Felice,

How you can add nested grid inside the grid NestedViewTemplate is demonstrates in the demo below: 
http://demos.telerik.com/aspnet-ajax/grid/examples/hierarchy/hierarchy-with-templates/defaultcs.aspx

Regards,
Pavlina
Telerik