UpdatePanel Request Message

Listing 2. Here is the request message sent from the browser to a server by the UpdatePanel control. (Some of the ViewState information was removed for the sake of brevity.)

ScriptManager1=UpdatePanel1|GridView1&__EVENTTARGET=GridView1&__EVENTAR
GUMENT=Page%242&__VIEWSTATE=7Du5....&__VIEWSTATEENCRYPTED=&__EVENTVALID
ATION=HCHVygp....