public CustomerSelectionViewData GetCustomerSelectionViewData(string cityFilter)
        {
            CustomerSelectionViewData vd = new CustomerSelectionViewData();
            vd.Customers = new ObservableCollection<CustomerListItemViewData>();

            foreach (var customer in cusRep.GetListOfCustomers(cityFilter))
            {
                vd.Customers.Add(new CustomerListItemViewData()
                {
                    CustomerID = customer.CustomerID,
                    FirstName = customer.FirstName,
                    LastName = customer.LastName,
                    Address = customer.Address,
                    City = customer.City,
                    ZipCode = customer.ZipCode,
                    Country = customer.Country,
                    Email = customer.Email,
                    TelephoneNumber = customer.TelephoneNumber,
                    MobileNumber = customer.MobileNumber,
                    CreditCardNumber = customer.CreditCardNumber,
                    ExpirationDate = customer.ExpirationDate,
                });
            }
            return vd;
        }
        public DesignTimeCustomerSelectionViewModel()
        {
            ViewData = new CustomerSelectionViewData();
            var customers = new ObservableCollection<CustomerListItemViewData>();
            customers.Add( new CustomerListItemViewData() {
                        CustomerID = 1,
                        FirstName = "Jack",
                        LastName = "Done",
                        Address = "In denmark somewhere",
                        City = "Odense",
                        ZipCode = "5200",
                        Country = "romania",
                        Email = "*****@*****.**",
                        TelephoneNumber = "0000 444 444 44",
                        MobileNumber = "0000 444 444 44",
                        CreditCardNumber = "0000 0000 0000 0000 0000",
                        ExpirationDate = DateTime.Now,
                });
            ((CustomerSelectionViewData)ViewData).Customers = customers;

        }