AutopostBack is a property typically used in Dropdownlist,Ra diobuttonlist, ListBox controls.
You will use this controls to dispaly set of items,
when you click on item in the list,selectedin dexchanged
event will be fired.anyway by default nothing happens with
this event.
if you want an action has to be occured.you should make autopostback="T rue".so whenever an event should fire and
need to data to be...