public void ReturnMotor(Manager manager) { Console.Clear(); MotorBL mtbl = new MotorBL(); bool a = false; Customers customer = new Customers(); Motor motor = new Motor(); ContractBL contractBL = new ContractBL(); Contract contract = new Contract(); Console.WriteLine("---------------------------------------------------"); Console.WriteLine("--------------Tra Xe----------"); Console.WriteLine("--------------------------------------------------"); customer = InputCustomerReturnMotor(); motor = InputMotorReturnMotor(); try { contractBL.ReturnMotor(customer, motor, contract); a = true; } catch (Exception e) { Console.WriteLine(e.Message); a = false; } if (a == true) { Console.WriteLine("TRA XE THANH CONG."); } }