private void button1_Click(object sender, EventArgs e) { string name = guestNameTextBox.Text; string nal = nationTB.Text; Guest g = new Guest(null, name, nal, DateTime.Now); GuestBUS gBUS = new GuestBUS(); g = gBUS.insertGuest(g); if (g != null) { MessageBox.Show(g.FullName + " " + g.Nationality); } else { return; } BookingBUS bBUS = new BookingBUS(); string roomType = roomTypeComboBox.Text; string roomID = roomComboBox.Text; string bookingType = bookingTypeCombobox.Text; DateTime dateIn = dateCheckin.DateTime; DateTime dateout = dateCheckout.DateTime; if (bBUS.checkAvaiable(roomID, dateIn, dateout) == false) { MessageBox.Show("ADD BOOKING SUCCESS FAILED!! ROOM BOOKED", "CONFIRMATION", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } bool breakfast = false; if (breakfastCheckbox.Checked == true) { breakfast = true; } string type = "003"; if (bookingType == "AGODA") { type = "001"; } else if (bookingType == "Booking.com") { type = "002"; } else { } DTO.Booking b = new DTO.Booking(0, roomID, g.InfoID, type, nv.NhanVienID, DateTime.Now, dateIn, dateout, breakfast); if (bBUS.InsertBooking(b)) { MessageBox.Show("ADD BOOKING SUCCESS FULL", "CONFIRMATION", MessageBoxButtons.OK); } else { MessageBox.Show("ADD BOOKING SUCCESS FAILED", "CONFIRMATION", MessageBoxButtons.OK, MessageBoxIcon.Error); } }