public ActionResult BookUpdate(BookAppointmentViewModel viewModel) { if (viewModel.Updating) { var updateBookingRequest = new UpdateAppointmentRequest { Id = viewModel.AppointmentId.Value, Date = viewModel.Date, StartTime = viewModel.StartTime, EndTime = viewModel.EndTime, LeadName = viewModel.LeadName, Address = viewModel.Address }; var validationResult = _appointmentService.ValidateUpdate(updateBookingRequest); if (!validationResult.IsValid) { foreach (var error in validationResult.Errors) { ModelState.AddModelError(error.Field ?? "", error.Text); } return(View("BookUpdate", viewModel)); } _appointmentService.Update(updateBookingRequest); } else { Guid id = Guid.NewGuid(); var makeBookingRequest = new BookAppointmentRequest { Id = id, ConsultantId = viewModel.ConsultantId.Value, Date = viewModel.Date, StartTime = viewModel.StartTime, EndTime = viewModel.EndTime, LeadName = viewModel.LeadName, Address = viewModel.Address }; var validationResult = _appointmentService.ValidateBook(makeBookingRequest); if (!validationResult.IsValid) { foreach (var error in validationResult.Errors) { ModelState.AddModelError(error.Field ?? "", error.Text); } return(View("BookUpdate", viewModel)); } _appointmentService.Book(makeBookingRequest); } return(RedirectToAction("Index", "Consultant", new { consultantId = viewModel.ConsultantId })); }