Select RadioButtonList Item by Matching its Text Part from Database

Hi

I use below code for binding CheckBox  from database

 if (_dr["Radiator"] != null && _dr["Radiator"].ToString() != "")
            {

                RDBSH.Checked = true;


            }

I want bind RadioButtonList from database like above how I can do it?

    <asp:RadioButtonList ID="RBL1" runat="server" RepeatDirection="Horizontal">
            <asp:ListItem Text="North" Value="North"></asp:ListItem>
            <asp:ListItem Text="South" Value="South"></asp:ListItem>


            </asp:RadioButtonList>

Best Regards

Neda