// 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));
        }