例如：轨道（track）和灯（light）的属性基本一样，要创建多个轨道和灯，则采用克隆方法，克隆大部分属性。轨道和灯具有类似的属性和方法，则抽象成设备(device )，这样可以提供统一的对外接口。

/// <summary>

/// 通过复制，快速创建多个同类对象

/// </summary>

public class Program

{

    public static void Main()

    {

        Device track1 = new Track();

        track1.ID = "101";

        track1.width = 10;

        track1.height = 5;

        track1.weight = 30;

        track1.Start();

        Device track2 = track1.Clone();

        track2.ID = "102"; ;

        track2.Stop();

        Device light1 = new Light();

        light1.ID = "201";

        light1.width = 30;

        light1.height = 15;

        light1.weight = 40;

        light1.Start();

        Device light2 = light1.Clone();

        light2.ID = "202";

        light2.Stop();

    }

}

abstract public class Device

{

    private string id;

    public string ID

    {

        set { id = value; }

        get { return id; }

    }

    public int width;

    public int height;

    public int weight;

    private  string state;

    public string State

    {

        set { state = value; }

        get { return state; }

    }

    public abstract Device Clone();

    public abstract void Start();

    public abstract void Stop();

}

class Track : Device

{

    public override Device Clone()

    {

        return (Device)this.MemberwiseClone();

    }

    public override void Start()

    {

        State = "free";

        Console.WriteLine("Track: {0} ,width={1} , height={2}, weight={3},state ={4}", ID, width, height, weight, State);

    }

    public override void Stop()

    {

        State = "occupy";

        Console.WriteLine("Track: {0} ,width={1} , height={2}, weight={3},state ={4}", ID, width, height, weight, State);

    }

}

class Light : Device

{

    public override Device Clone()

    {

        return (Device)this.MemberwiseClone();

    }

    public override void Start()

    {

        State = "on";

        Console.WriteLine("Light: {0} ,width={1} , height={2}, weight={3},state ={4}", ID, width, height, weight, State);

    }

    public override void Stop()

    {

        State = "off";

        Console.WriteLine("Light: {0} ,width={1} , height={2}, weight={3},state ={4}", ID, width, height, weight, State);

    }

}