DataList_ItemCommand 常用方法

  switch (e.CommandName)
        {
            case "del":
                int itemId = (int)DataList1.DataKeys[e.Item.ItemIndex];
                Button2.Text = itemId.ToString();
                RegisterStartupScript("", "<script> if (confirm('是否刪除該信息？圖片信息將一併刪除，刪除後無法恢復！點擊確定刪除')==true){document.aspnetForm.ctl00_ContentPlaceHolder1_Button2.click();}</script>");
                break;
        }