Mario,

To find out the control that caused the postback you can use the __EVENTTARGET hidden control. In the Page_Load method you can use the following:

if (this.IsPostBack)
{
	Response.Write(Request.Params["__EVENTTARGET"].ToString());
}

>Thanks for the response. In this moment i do exactly that, i can post sucefully the form to the server, my problem is that in the *server* i don't can know *wath* control initiate the postback. So, if the AutoPostback is true for the edit Edit1, i need capture in the server that Edit1 send the postback...