title: does gridview save data in viewstate?
body: <p>hi
  i bind a DataTable to a gridview.
  i want to use the DataTable in some postback event, and ii want to use viewstate.
  does gridview save data in viewstate? if no what is the best way to do this.</p>
  
  <p>(full story :
  i have a custom gridview derived from standard asp.net gridview, 
  and i put a button in header to export data to excel, i want to use data saved in viewstate to export to excel)</p>
  
  <p>thanks</p>