public List <SelectListItem> GetCarModelForDropDownList(int id)
        {
            List <SelectListItem> carModelList = new List <SelectListItem>();
            var cars = _adRepo.GetAllCarModelByBrandId(id).ToList();

            foreach (var car in cars)
            {
                carModelList.Add(new SelectListItem
                {
                    Text  = car.Model,
                    Value = car.Id.ToString()
                });
            }
            return(carModelList);
        }