program.cs

来自「这是asp.net^和Visual C++Sharp编写的串并口通讯的书籍 源代」· CS 代码 · 共 68 行

using System;
using System.Collections.Generic;
using System.Text;

namespace _2
{
    class Program
    {
        static void Main(string[] args)
        {
            Creator c1 = new RedLightCreator();
            Creator c2 = new GreenLightCreator();

            Light rl = c1.factory();
            Light gl = c2.factory();

            rl.TurnOn();
            rl.TurnOff();

            Console.WriteLine("---------------");

            gl.TurnOn();
            gl.TurnOff();
        }
    }
    public abstract class Light
    {
        public abstract void TurnOn();
        public abstract void TurnOff();
    }

    public class RedLight : Light
    {
        public override void TurnOn()
        { Console.WriteLine("开始生产红色灯泡！"); }

        public override void TurnOff()
        { Console.WriteLine("红色灯泡生产结束！"); }
    }

    public class GreenLight : Light
    {
        public override void TurnOn()
        { Console.WriteLine("开始生产绿色灯泡！"); }

        public override void TurnOff()
        { Console.WriteLine("绿色灯泡生产结束！"); }
    }

    public abstract class Creator
    {
        public abstract Light factory();
    }

    public class RedLightCreator : Creator
    {
        public override Light factory()
        { return new RedLight(); }
    }

    public class GreenLightCreator : Creator
    {
        public override Light factory()
        { return new GreenLight(); }
    }

}