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 72 行

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

namespace _1
{
    class Program
    {
        static void Main(string[] args)
        {
            LightSimpleFactory lsf = new LightSimpleFactory();

            Light l = lsf.Create("绿灯");
            l.TurnOn();
            l.TurnOff();

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

            l = lsf.Create("红灯");
            l.TurnOn();
            l.TurnOff();

        }
    }
    //定义抽象类
    public abstract class Light
    {
        public abstract void TurnOn();
        public abstract void TurnOff();
    }

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

        public override void TurnOff()
        {
            Console.WriteLine("生产红灯结束！");
        }
    }

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

        public override void TurnOff()
        {
            Console.WriteLine("生产绿灯结束！");
        }
    }

    public class LightSimpleFactory
    {
        public Light Create(string LightColor)
        {
            if (LightColor == "绿灯")
                return new GreenLight();
            else if (LightColor == "红灯")
                return new RedLight();
            else
                return null;
        }
    }

}