protected override void OnStartup(StartupEventArgs e)
{
var context = new BankContext();
context.CreateOrUpdateDatabase();
var customerRepository = new CustomerRepository(context);
var cityRepository = new CityRepository(context);
var accountRepository = new AccountRepository(context);
var customerValidator = new CustomerValidator(cityRepository);
var accountValidator = new AccountValidator(customerRepository);
var dialogService = new WindowDialogService(accountRepository, accountValidator);
var customersWindow = new CustomersWindow(customerRepository, customerValidator, cityRepository, dialogService);
customersWindow.Show();
}