hi i am not able to get listbox value by using Request.Form["listbox1"] method, here i am using master page.
with out masterpage its working fine.can any one help me plz.

Hey,

Yes, with master page, the clientID on the form is this:

ctl100$ContentPlaceholder$listbox1

or something like that; that is the ID of the form item being posted. You have to access the listbox with this ID, or somehow output the ID somewhere. I don't know the context you are using it, so if you post some more code, I could help more.

Brian