策略模式原型

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace StrategyMordern
{
     /// <summary>
    /// 抽象算法类   
    /// </summary>
    abstract class Strategy
    {
        //算法方法
        public abstract void AlgorithmInterface();
    }
 
    class ConcreteStrategyA : Strategy
    {
        //算法A实现方法
        public override void AlgorithmInterface()
        {
            Console.WriteLine("算法A实现");
        }
    }
 
    class ConcreteStrategyB : Strategy
    {
        //算法B实现方法
        public override void AlgorithmInterface()
        {
            Console.WriteLine("算法B实现");
        }
    }
 
    class ConcreteStrategyC : Strategy
    {
        //算法C实现方法
        public override void AlgorithmInterface()
        {
            Console.WriteLine("算法C实现");
        }
    }
 
    /// <summary>
    /// Context，用一个ConcreteStrategy来配置，维护一个对Strategy对象的引用。
    /// </summary>
    class Context
    {
        Strategy strategy;
        public Context(Strategy strategy)
        {
            this.strategy = strategy;
        }
 
        //上下文接口
        public void ContextInterface()
        {
            strategy.AlgorithmInterface();
        }
    }
}
 
 
//Main函数主界面
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace StrategyMordern
{
    class Program
    {
        static void Main(string[] args)
        {
            Context context;
            context = new Context(new ConcreteStrategyA());
            context.ContextInterface();
 
            context = new Context(new ConcreteStrategyB());
            context.ContextInterface();
 
            context = new Context(new ConcreteStrategyC());
            context.ContextInterface();
 
            Console.Read();
        }
    }
}
代码都是书里看到的，自己手写的。大家共同学习。