DetailTable that shows the same record as the master

[Mattias]

Hi,
What is the best way to bind a detailtable with the same record as the master?

    <telerik:radgrid
        ID="radGridBusinessRegister"
        runat="server"
        allowpaging="True"
        allowsorting="True"
        gridlines="None"
        onneeddatasource="radGridBusinessRegisterNeedDataSource"
        OnDetailTableDataBind="radGridBusinessRegisterDetailTableDataBind"
        Skin="SkyBlue"
        ShowGroupPanel="false"
        AutoGenerateColumns="false">
        <MasterTableView
            DataKeyNames="ID"
            Name="Master">
            <Columns>
                <telerik:GridBoundColumn UniqueName="Name" DataField="Name" HeaderText="Namn" />
                <telerik:GridBoundColumn UniqueName="Phone1" DataField="Phone1" HeaderText="Telefon" />
                <telerik:GridBoundColumn UniqueName="Email" DataField="Email" HeaderText="E-post" />
            </Columns>
            <DetailTables>
                <telerik:GridTableView
                    DataKeyNames="ID"
                    AutoGenerateColumns="true"
                    ShowHeader="false"
                    Name="Detail"
                    CommandItemDisplay="None">
                    <ItemTemplate>
                        <h1>Detaljsida för <%# Eval("Name") %></h1>
                        <p><%# Eval("Description") %></p>
                    </ItemTemplate>
                </telerik:GridTableView>
            </DetailTables>
        </MasterTableView>
    </telerik:radgrid>

protected void radGridBusinessRegisterDetailTableDataBind(object source, GridDetailTableDataBindEventArgs e)
        {
            if (e.DetailTableView.Name == "Detail")
            {
                int id = (int)e.DetailTableView.ParentItem.GetDataKeyValue("ID");
                e.DetailTableView.DataSource = CompanyService.GetById(id);
            }
        }

This is not working because the datasource needs a different kind of data type.
Error: Data source is an invalid type.  It must be either an IListSource, IEnumerable, or IDataSource.

I guess I don't need the round trip to the database either!

[Mattias]

HA! It was to simple! :)
I don't need to bind at all! The detail table inherits automatically the master table.

Telerik, you're the best! :)

Hmm, it would be nice to be able to mark my own reply as final answer!