策略模式

    //策略模式    public class CashContext  -->Context    {        CashSuper cashSuper = null;        public CashContext(string type)        {            switch (type)            {                case \"正常收费\":                    cashSuper = new CashNormal();                    break;                case \"满300返10\":                    cashSuper = new CashReturn(\"300\

/// <summary>    /// 现金收取抽象类    /// </summary>    public abstract class CashSuper  --->Strategy    {        public abstract double acceptCash(double money);    }

-Strategy

ConcreteStrategyA

+Algorithmlnterface（）

Context

+Contextlnterface（）

ConcreteStrategyC

Context上下文，用一个ConcreteStrategy来配置，维护一个对Strategy对象的引用

    /// <summary>    /// 打折收费子类    /// </summary>    public class CashRebate : CashSuper-->ConcreteStrategyB    {        //打折 折扣        private double moneyRebate = 1d;        public CashRebate(string moneyRebate)        {            this.moneyRebate = double.Parse(moneyRebate);        }        public override double acceptCash(double money)        {            return money * moneyRebate;        }    }

策略类，定义所有支持的算法的公共接口

具体策略类，封装了具体的算法活行为，继承于Strategy

Strategy

/// <summary>    /// 正常收费子类    /// </summary>    public class CashNormal : CashSuper-->ConcreteStrategyA    {        public override double acceptCash(double money)        {            return money;        }    }

//策略模式CashContext context = new CashContext(\"满300返10\");double result = context.GetResult(800);Console.WriteLine(result);

ConcreteStrategyB