【c#】隐式接口和显式接口的区别

梦里梦外; 2022-06-12 05:26 169阅读 0赞

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      先看个例子 
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      声明两个接口 
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       public&nbsp; interface IFg&nbsp; 
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       {&nbsp; 
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       &nbsp; &nbsp; int Add();&nbsp; 
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       &nbsp; &nbsp; void Fei();&nbsp; 
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       }&nbsp; 
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       public interface IWf&nbsp; 
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       {&nbsp; 
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       &nbsp; &nbsp; int Add();&nbsp; 
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       &nbsp; &nbsp; void Fei();&nbsp; 
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       } 
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      Fg类隐式继承接口 
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       public class Fg : IFg, IWf&nbsp; 
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       {&nbsp; 
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       &nbsp; &nbsp; public int Add()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       &nbsp; &nbsp; public void Fei()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       }&nbsp; 
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      Fg类开始继承显式接口 
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       public class Fg : IFg, IWf&nbsp; 
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       {&nbsp; 
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       &nbsp; &nbsp; int IWf.Add()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       &nbsp; &nbsp; int IFg.Add()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       &nbsp; &nbsp; void IWf.Fei()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       &nbsp; &nbsp; void IFg.Fei()&nbsp; 
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       &nbsp; &nbsp; {&nbsp; 
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       &nbsp; &nbsp; &nbsp; &nbsp; throw new NotImplementedException();&nbsp; 
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       &nbsp; &nbsp; }&nbsp; 
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       } 
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      看到两个接口的实现后可总结： 
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     <li>第一、显式接口中的方法没有修饰符而 隐式接口方法的修饰符为public</li> 
     <li>第二、显式接口中的方法可以看到从哪里来【<span style="color:rgb(255,0,0)">通过接口访问，避免访问歧义</span>】，来源相当清晰，隐式接口看不出来源</li> 
     <li>第三、显式接口会把父级接口中的<span style="color:rgb(255,0,0)">方法和属性完全继承</span>，隐式接口会<span style="color:rgb(255,0,0)">过滤冗余的方法</span></li> 
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      最后用类的方式调用方法会出错，需要用 
     <span style="color:rgb(255,0,0)">as转换接口类型</span>，平常项目的使用一般都是 
     <span style="color:rgb(255,0,0)">实现隐式接口</span>，具体要看实际情况设计。 
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