C#模板方法模式-白红宇

模板方法模式是通过把不变行为搬移到超类，而超类一定会定义为虚类虚方法，虚方法在每个子类中重写，去除子类中的重复代码来体现它的优势。

通用模式样例代码为：

1 /* 2  * Created by SharpDevelop. 3  * User: home 4  * Date: 2013/4/24 5  * Time: 21:42 6  *  7  * To change this template use Tools | Options | Coding | Edit Standard Headers. 8  */ 9 using System;10 11 namespace template12 {13     abstract class AbstractClass14     {15         public abstract void PrimitiveOperation1();16         public abstract void PrimitiveOperation2();17         18         public void TemplateMethod()19         {20             PrimitiveOperation1();21             PrimitiveOperation2();22             Console.WriteLine("");23         }24     }25     26     class ConcreteClassA : AbstractClass27     {28         public override void PrimitiveOperation1()29         {30             Console.WriteLine("具体类A方法1实现。");31         }32         public override void PrimitiveOperation2()33         {34             Console.WriteLine("具体类A方法2实现。");35         }36     }37     38     class ConcreteClassB : AbstractClass39     {40         public override void PrimitiveOperation1()41         {42             Console.WriteLine("具体类B方法1实现。");43         }44         public override void PrimitiveOperation2()45         {46             Console.WriteLine("具体类B方法2实现。");47         }48     }49     50     class Program51     {52         public static void Main(string[] args)53         {54             AbstractClass c;55             56             c = new ConcreteClassA();57             c.TemplateMethod();58             59             c = new ConcreteClassB();60             c.TemplateMethod();61             62             Console.Read();63         }64     }65 }