title: GridView.PageIndexChanged event
body: <p>I thought  GridView.PageIndexChanged event signals that ObjectDataSource retrieved rows for appropriate page, but I’m probably wrong, since this event happens before ObjectDataSource control rebinds to data source. What this event signals then? Only that GridView now knows what values will parameters maximumRows  and startRowIndex have? </p>
  
  <p>thanx</p>