public ActionResult Create()
        {
            var membershipType = new CreateCustumerViewModel
            {
                MembershipTypes = _context.MembershipTypes
            };

            return(View(membershipType));
        }
        public ActionResult Create(Customer customer)
        {
            if (!ModelState.IsValid)
            {
                var viewModel = new CreateCustumerViewModel
                {
                    Customer        = customer,
                    MembershipTypes = _context.MembershipTypes.ToList()
                };
                return(View("Create", viewModel));
            }


            _context.Customers.Add(customer);
            _context.SaveChanges();
            return(RedirectToAction("Index", "Customer"));
        }