private void bntThanhToan_Click(object sender, EventArgs e) { //fHoaDon XuatHoaDon = new fHoaDon(); // XuatHoaDon.ShowDialog(); BAL_HOADON hd = new BAL_HOADON(); DAL_HOADON bill = new DAL_HOADON(); BAL_BAN ban = new BAL_BAN(); BEL_BAN table = lsvBill.Tag as BEL_BAN; ban.get_lv(lsvBill, txt_totalprice); if (hd.Check_out(lsvBill, txt_totalprice) != -1) { if (MessageBox.Show("Bạn có chắc thanh toán hóa đơn cho bàn " + table.Tenban, "Thông báo", MessageBoxButtons.OKCancel) == System.Windows.Forms.DialogResult.OK) { bill.CheckOut(bill.GetBill(table.Soban)); ban.showBill(table.Soban); loadban(); } } }