public void tongtiendamuasach() { ChiTietKhachHangDAO chiTietKhachHangDAO = new ChiTietKhachHangDAO(); int sum = chiTietKhachHangDAO.GetTongTienKH(ViewState["MaKHLayDuoc"].ToString()); lblTongSoTien.Text = "Tổng số tiền khách hàng đã mua sách là: " + sum.ToString() + " đồng"; }
private void LayDuLieuVaoGridView() { ChiTietKhachHangDAO chiTietKhachHangDAO = new ChiTietKhachHangDAO(); GridView2.DataSource = chiTietKhachHangDAO.GetHDKH(ViewState["MaKHLayDuoc"].ToString()); GridView2.DataBind(); }