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C#语法糖之第四篇: 扩展方法

2019-11-17 03:01:40
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C#语法糖之第四篇: 扩展方法

    今天继续分享C#4.0语法糖的扩展方法,这个方法也是我本人比较喜欢的方法。大家先想想比如我们以前写的原始类型不能满足现在的需求,而需要在该类型中添加新的方法来实现时大家会怎么做。我先说一下我没有学习到这个知识点之前做的方法:

最笨的办法就是修改原来的类型,然后添加一个方法来达到需求的变更,如下代码所示:

  

 1 public  class KuozFF 2  3     { 4  5         public void NormalMethod() 6  7         { 8  9             Console.WriteLine("我是原始方法");10 11         }12 13 public void ExtensionMethod()14 15         {16 17             Console.WriteLine("我是扩展方法");18 19         }20 21     }
View Code

调用方法:

1 KuozFF method=new KuozFF ();2 3             method.NormalMethod();4 5             method.ExtensionMethod();6 7             Console.ReadLine();
View Code

输出效果如下:

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