Hi,
Code in design page...
<asp:radiobuttonlist id="RadioButtonList1" runat="server" autopostback="True" xmlns:asp="#unknown">
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged">
<asp:listitem>Choice1</asp:listitem>
<asp:listitem>choice2</asp:listitem>
<asp:listitem>choice3</asp:listitem>
<asp:listitem>choice4</asp:listitem>
</asp:radiobuttonlist>
I raise server event on index changed by user.
event code for retrieving selectedindex from raised event
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
int i = RadioButtonList1.SelectedIndex;
}
If you changed index this event'll be raise thn check for index values.
Just now I worked on it.it works fine for me.
If any doubts just post with your code it can helps to solve your problem
I hope you understand what I said.
All the best.