void LuuHoaDon() { string maHD = bus_hoaDon.GetMaHoaDonNext(); string maPK = tbxMaPhieuKham.Text; int tienKham = bus_thamSo.GetGiaTriThamSo("TienKham"); if (tienKham == -1) { MessageBox.Show("Lấy thông tin tiền khám thất bại!"); tienKham = 0; } int tienThuoc = 0; DataTable dtTienThuocTmp = bus_donThuoc.GetThongTinTienThuocFromPhieuKham(tbxMaPhieuKham.Text); foreach (DataRow r in dtTienThuocTmp.Rows) { tienThuoc += Int32.Parse(r.ItemArray[3].ToString()); } //MessageBox.Show(tienThuoc.ToString()); DTO_HoaDon hoaDon = new DTO_HoaDon(maHD, maPK, tienKham, tienThuoc); bus_hoaDon.Add(hoaDon); //LuuNo vao dto }