private void BtnSaveReservation_Click(object sender, EventArgs e) { try { string errMsg = ValidateForm(); if (errMsg != string.Empty) { toolStripStatusLabel1.Text = "Create Reservation failed"; toolStripStatusLabel1.ForeColor = Color.Red; MessageBox.Show(errMsg, "Missing Information", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } ReservationService reservationService = new ReservationService(); Reservation reservation = new Reservation(); reservation = PopulateReservationObject(); if (reservationService.AddNewReservation(reservation)) { DisabledForm(); toolStripStatusLabel1.Text = "Create Reservation successfully"; toolStripStatusLabel1.ForeColor = Color.LightGreen; string reservationNumberToShow = reservationService.ShowReservationNumber(reservation.CheckInDate, reservation.CheckOutDate, reservation.RoomId); MessageBox.Show($"The Reservation Number is: {reservationNumberToShow}", "INFORMATION!", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { string msg = ""; foreach (ValidationError error in reservation.Guest.Errors) { msg += error.Description + Environment.NewLine; } foreach (ValidationError error in reservation.Errors) { msg += error.Description + Environment.NewLine; } toolStripStatusLabel1.Text = "Create Reservation failed"; toolStripStatusLabel1.ForeColor = Color.Red; MessageBox.Show(msg, "Missing Information", MessageBoxButtons.OK, MessageBoxIcon.Error); } } catch (Exception ex) { toolStripStatusLabel1.Text = "Create Reservation failed"; toolStripStatusLabel1.ForeColor = Color.Red; MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }