Please help me out!!! i'm stuck with binding data to radio button in a formview

[nevoda]

my code is as below, i try many times without code behind and it never work. i even don't know how to code in code behind. i need help!! can any one help me out?

gender:<asp:Rad ioButton ID="MaleRadioBu tton" runat="server" Text="Male" Value="Male" GroupName="Gend er" Checked='<%# Bind("gender") %>'/>
<asp:RadioButto n ID="FemaleRadio Button" runat="server" Text="Female" Value="Female" GroupName="Gend er" Checked='<%# Bind("gender") %>'/>