ASP.Net c# Which radio button in a given GroupName is selected?

[Sheep]

I have 30 individual RadioButtons. I can not use a RadioButtonList. There are 3 groups of buttons. Each group has a unique GroupName. Everything works properly in the web browser. How can i tell on a post back which button is selected within each of the given GroupsNames?EDIT: the function i used\[code\]private string getRadioValue(ControlCollection clts, string groupName){ string ret = ""; foreach (Control ctl in clts) { if (ctl.Controls.Count != 0) { if (ret == "") ret = getRadioValue(ctl.Controls, groupName); } if (ctl.ToString() == "System.Web.UI.WebControls.RadioButton") { RadioButton rb = (RadioButton)ctl; if (rb.GroupName == groupName && rb.Checked == true) ret = rb.Attributes["Value"]; } } return ret;}\[/code\]