protected void gridDanhSach_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
        {
            string ID = e.Keys[0].ToString();

            data = new dtNhomHangHoa();
            data.Xoa(ID);
            e.Cancel = true;
            gridDanhSach.CancelEdit();
            LoadGrid();
        }
        protected void gridDanhSach_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
        {
            string ID = e.Keys[0].ToString();

            data = new dtNhomHangHoa();
            data.Xoa(ID);
            e.Cancel = true;
            gridDanhSach.CancelEdit();
            LoadGrid();
            dtLichSuTruyCap.ThemLichSu(Session["IDChiNhanh"].ToString(), Session["IDNhom"].ToString(), Session["IDNhanVien"].ToString(), "Quản lý nhóm hàng hóa", "Xóa nhóm hàng hóa: " + ID);
        }