public IActionResult RentCar([FromForm] RentCarVM vM) { var listOfCars = carServices.CarList(); var temp = new RentCarVM { _cars = listOfCars.Select(t => new SelectListItem { Selected = t.Id == vM.Id, Value = $"{t.Id}", Text = $"{t.Name}, {t.Model }, Pris per dag: {t.PricePerDay}" }).ToList(), Car = listOfCars.SingleOrDefault(m => m.Id == vM.Id), }; var userId = HttpContext.User.FindFirst(ClaimTypes.NameIdentifier).Value; carServices.AddBooking(temp, userId); return(View("SelectedCar", temp)); }