I know what is causing this problem but i still do no know how to solve it
Ok, in a buttom click event, i called a method that insert a record and rebind after that
Sub btnDemo_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btndemo.Click
It seems that the radgrid.Rebind() is causing this problem. Also, it works well if i don't publish my site into a single page assemblies.
How do i solve this? Please help it is very urgent and it has been almost 2 days and i still can't get it to work. Thanks