protected void btDelete_Click(object sender, EventArgs e) { try { bool flag = false; VanBanTrongHoSoLogic um = new VanBanTrongHoSoLogic(); foreach (GridViewRow row in dgrResult.Rows) { CheckBox chk = (CheckBox)row.FindControl("cbChoose"); if (chk.Checked) { flag = true; string id = row.Cells[0].Text.ToString().Trim(); int ID = Int32.Parse(id); um.deleteVanBanTrongHoSo(ID); } } if (flag) { Response.Redirect("ThongKeTaiLieu.aspx", false); } else { Response.Write("<script language='javascript'> { alert('Hãy chọn tài liệu muốn xóa');}</script>"); } } catch (Exception ex) { Logger.logmessage(classobject, "btDelete_Click", ex.Message + ex.StackTrace); Response.Redirect("~/ThongBaoLoi.aspx", false); } }