C#通过Builder模式造车

    public class Car
    {
        public string Model { get; set; }
        public string Engine { get; set; }
        public string Transmission { get; set; }
        public string Body { get; set; }
        public int Doors { get; set; }
        public List<string>  Accessories { get; set; }
        public Car()
        {
            Accessories = new List<string>();
        }
        public void ShowCarInfo()
        {
            Console.WriteLine(Model);
            Console.WriteLine(Engine);
            Console.WriteLine(Body);
            Console.WriteLine("门的数量：" + Doors);
            Console.WriteLine(Transmission);
            Console.WriteLine("配置为：");
            foreach (var accessory in Accessories)
            {
                Console.WriteLine("\t{0}", accessory);
            }
        }
    }

   public abstract class CarBuilder
    {
        protected Car _car;
        public Car GetCar()
        {
            return _car;
        }
        public void SetCar()
        {
            _car = new Car();
        }
        public abstract void SetModel();
        public abstract void SetEngine();
        public abstract void SetTransmission();
        public abstract void SetBody();
        public abstract void SetDoors();
        public abstract void SetAccessories();
    }

  public class BuilderOne : CarBuilder
    {
        public override void SetEngine()
        {
            _car.Engine = "发动机1";
        }
        public override void SetModel()
        {
            _car.Model = "型号1";
        }
        public override void SetTransmission()
        {
            _car.Transmission = "变速1";
        }
        public override void SetBody()
        {
            _car.Body = "SUV";
        }
        public override void SetAccessories()
        {
            _car.Accessories.Add("内饰");
            _car.Accessories.Add("外饰");
        }
        public override void SetDoors()
        {
            _car.Doors = 6;
        }
    }

   public class BuilderManager
    {
        private readonly CarBuilder _carBuilder;
        public BuilderManager(CarBuilder carBuilder)
        {
            _carBuilder = carBuilder;
        }
        public void BuildCar() 
        {
            _carBuilder.SetCar();
            _carBuilder.SetModel();
            _carBuilder.SetEngine();
            _carBuilder.SetBody();
            _carBuilder.SetDoors();
            _carBuilder.SetTransmission();
            _carBuilder.SetAccessories();
        }
        public Car GetCar()
        {
            return _carBuilder.GetCar();
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var builderManager = new BuilderManager(new BuilderOne());
            builderManager.BuildCar();
            var car = builderManager.GetCar();
            car.ShowCarInfo();
            Console.ReadKey();
        }
    }