Hi.
I have a gridview in my page that I bind a list to it.in gridview I press the edit button and gridview goes to edit mode.I input the new quantity in textbox and after that i press update but i see this error. I saw the post http://forums.asp.net/t/922994.aspx but it wasn't useful for me.
I put EnableEventValidation=false but in this form when i press update nothing happen.and If put the code in page load event in (!page.ispostback) when i press the edit button of gridview the gridview be invisible.I don't know what should do.please help me.
here is the source page that gridview is in it:
<%@ Page Language="C#" Go to the complete details ...