add a confirm dialogbox to the editItem of the datagrid

//first add a delegate in private void InitializeComponent()

this.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemCreated);

private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   ListItemType lit = e.Item.ItemType;
   if (lit == ListItemType.Item || lit == ListItemType.AlternatingItem)
   {
    CustomizeItem(e);
   }
  }

  private void CustomizeItem(DataGridItemEventArgs e)
  {
   WebControl wc;
   int i = e.Item.Cells.Count -1;
   wc = ((WebControl) e.Item.Cells[i]);
   wc.Height = 25;//set the item's style
   wc.Width = 25;
   String js = "return confirm("Delete it?");";
   wc.Attributes.Add("onclick", js);
   //   wc.ToolTip = e.Item.Cells[0].Text.Trim() + "...";
   wc.ToolTip += "Delete this row";
  }