public IActionResult Details(int?id) { if (id == null) { return(new HttpStatusCodeResult(HttpStatusCode.BadRequest)); } VehicleType vehicleType = _vehicleTypeRepository.FindVehiecleById(v => v.Id == id).FirstOrDefault(); if (vehicleType == null) { ModelState.AddModelError("VehicleType details", "There is not vehicle type."); } return(View(vehicleType)); }