public PaymentForm(decimal amount = 0, int orderId = 0) { _amount = amount; _orderId = orderId; InitializeComponent(); _creditManager = CreditManager.CreateAsSingleton(PathHelper.CreditPathModel); _cashManager = CashManager.CreateAsSingleton(PathHelper.CashPathModel); _checkManager = CheckManager.CreateAsSingleton(PathHelper.CheckPathModel); }