private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e) {   switch(e.Item.ItemType)   {   case ListItemType.Item :   case ListItemType.AlternatingItem :   case ListItemType.EditItem:   TableCell myTableCell;   myTableCell = e.Item.Cells[14];   LinkButton myDeleteButton ;   myDeleteButton = (LinkButton)myTableCell.Controls[0];   myDeleteButton.Attributes.Add("onclick","return confirm(’您是否确定要删除这条信息’);");   break;   default:   break;   } }