public IActionResult Holidays(BookingConflictViewModel viewModel, bool confirmDelete = false) { if (viewModel.ConflictedBooking != null && viewModel.ConflictedBooking.Any()) { if (confirmDelete) { foreach (var deletedBooking in viewModel.ConflictedBooking) { bookingService.Delete(deletedBooking.Id); } } else { foreach (var item in ModelState) { if (item.Key.Contains("ConflictedBooking")) { ModelState.ClearValidationState(item.Key); ModelState.MarkFieldValid(item.Key); } } } } var holidayConflictions = holidayService.FindConflicts(viewModel.InputtedHoliday); if (holidayConflictions.Any()) { viewModel.ConflictedBooking = holidayConflictions; return(View(viewModel)); } var status = holidayService.AddHolidayBooking(viewModel.InputtedHoliday); if (status == HolidayBookingStatus.OK) { return(RedirectToAction("List")); } ModelState.AddModelError(string.Empty, HolidayErrorMessageLookup[status]); return(View(viewModel)); }