protected void gridNhomKhachHang_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)
        {
            string ID = e.Keys["ID"].ToString();
            string TenNhomKhachHang = e.NewValues["TenNhomKhachHang"].ToString();
            string GhiChu           = e.NewValues["GhiChu"] == null ? "" : e.NewValues["GhiChu"].ToString();

            data.SuaThongTinNhomKhachHang(Int32.Parse(ID), TenNhomKhachHang, GhiChu);
            e.Cancel = true;
            gridNhomKhachHang.CancelEdit();
            LoadGrid();
        }
        protected void gridNhomKhachHang_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)
        {
            string ID = e.Keys["ID"].ToString();
            string TenNhomKhachHang = e.NewValues["TenNhomKhachHang"].ToString();
            string GhiChu           = e.NewValues["GhiChu"] == null ? "" : e.NewValues["GhiChu"].ToString();

            data.SuaThongTinNhomKhachHang(Int32.Parse(ID), TenNhomKhachHang, GhiChu);
            e.Cancel = true;
            gridNhomKhachHang.CancelEdit();
            LoadGrid();


            dtLichSuTruyCap.ThemLichSu(Session["IDNhanVien"].ToString(), Session["IDNhom"].ToString(), "Nhóm Khách Hàng:" + TenNhomKhachHang, Session["IDKho"].ToString(), "Danh Mục", "Cập Nhật");
        }