// GET: Tanks public ActionResult Index(int?id) { TankViewModel tankViewModel = new TankViewModel(); if (id != null) { Tank tank = tankService.GetTankById(id); tankViewModel = new TankViewModel() { Id = tank.Id, IsActive = tank.IsActive, Code = tank.Code, Volume = tank.Volume, FuelTypeName = tank.FuelType.Name, FuelTypeId = tank.FuelTypeId.Value }; } ViewBag.FuelTypeList = new SelectList(genericService.GetList <FuelType>(), "Id", "Name"); return(View(tankViewModel)); }