private void DeleteCustomer() { bool flag2 = true; int choice = 0; while (flag2) { Console.WriteLine("Please select the customer to delete: "); choice = Convert.ToInt32(Console.ReadLine()); var list = _customerManager.GetAll().Data; if (!list.Any(x => x.UserID == choice)) { Console.WriteLine(Messages.NotExist + "customer"); } else { flag2 = false; } } _customerManager.GetList(_customerManager.GetAll().Data); _customerManager.Delete(_customerManager.FindByID(choice).Data); Console.WriteLine("Customer" + Messages.DeleteSingular); }