策略模式典型演示程序C#源代码，演示程序很好的解释了策略模式的编程模板。源码中包括：现金收费抽象类（现金收取超类的抽象方法，收取现金，参数为原价，返回为当前价）、正常收费子类、打折收费子类（打折收费，初始化时，必需要输入折扣率，如八折，就是0.8）、返利收费子类（返利收费，初始化时必须要输入返利条件和返利值，比如满300返100，则moneyCondition为300，moneyReturn为100、若大于返利条件，则需要减去返利值）、现金收费工厂类等。-The strategy pattern typical demonstration program C# source code, demo program a good explanation of the policy mode programming template. Source include: cash charges abstract class (cash charge superclass abstract methods, to receive cash, the parameters for the original price, return to the current price), the normal fee subclass, discount toll subclass (discounted fees, initialization will need to enter the discount rate, such as 20　off, is 0.8), the rebate toll subclass (rebate charges, initialization must Rebate and rebate value, such as full 300 back to 100, moneyCondition for 300 100 moneyReturn, greater than the rebate, need to subtract the rebate value), cash charges factory class.