how can I use radio buttons which are created in run time

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C#

ASP.NET

Hi all,

I had a serious problem. While solving this problem I had more then
10 run time radio buttons each having a unique id in it. While calling from button click, I am getting a null reference exception. I tried many times by using "findControl" method. Many people suggested me to reuse controls again in button_click. But, while recreating new id's created for every control all are having default value unchecked, but I need to find which one is checked and which one is unchecked.
Please please help me, I am suffering a lot.

Thank you very very much in advance.