static void Main(string[] args) { using (BankServiceClient proxy = new BankServiceClient(new InstanceContext(new CallbackHandler()))) { double money; Console.WriteLine("Enter name:"); proxy.IsLogin(Console.ReadLine()); // return; do { Console.WriteLine("Введіть суму грошей:"); money = Convert.ToDouble(Console.ReadLine()); proxy.PutMoney(money); Console.WriteLine("Balance: {0}", proxy.GetBalance()); } while (money > 0); proxy.Disconnect(); } }