public ActionResult Create()
        {

            var dropdownlist_Trip_Property = new CreateViewModel.DropDownList_Trip()
            {
                Trips = TripService.GetTrips().ToList()
            };

            var createViewModel = new CreateViewModel()
            {
                DropDownList_Trip_Property = dropdownlist_Trip_Property
            };

            return View(createViewModel);
        }
        public ActionResult Create(CreateViewModel createViewModel)
        {

            return View(createViewModel);
        }