public IActionResult CreateDealer(int id)
        {
            DealerFormViewModel formDealer = new DealerFormViewModel
            {
                IdCompany = id
            };

            return(View(formDealer));
        }
        public IActionResult CreateDealer(DealerFormViewModel formDealer, int id)
        {
            Dealer dealer = new Dealer();

            formDealer.IdCompany = id;
            var company = _companyService.FindCompanyById(id);

            dealer.Name    = formDealer.Name;
            dealer.Company = company;
            _dealerService.AddDealer(dealer);

            return(RedirectToAction(nameof(Index)));
        }