radiolistbutton

wrote:

i should use session?
or class?
or query string?
or i can use easy solution?

All those solutions are easy. They will all work ( well, I take it back, what do you mean by 'class' ? ). They really have nothing to do with the radiobuttonlist, but with state management. I'd use the query string where ever possible, viewstate if I need to, and session if I have no choice. Based on what you've asked, you know the answers, and provide no details about your situation that help us tell you which one to use, except that it seems that you don't think that using the query string or session are easy. If you don't think that, you should buy a book and read it, because once you understand them, they are trivial to use.