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C# Delegate类代码示例

本文整理汇总了C#中System.Delegate的典型用法代码示例。如果您正苦于以下问题:C# Delegate类的具体用法?C# Delegate怎么用?C# Delegate使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


Delegate类属于System命名空间,在下文中一共展示了Delegate类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: myMethodDelegate

//引入命名空间
using System;
public class SamplesDelegate  {

   // Declares a delegate for a method that takes in an int and returns a String.
   public delegate String myMethodDelegate( int myInt );

   // Defines some methods to which the delegate can point.
   public class mySampleClass  {

      // Defines an instance method.
      public String myStringMethod ( int myInt )  {
         if ( myInt > 0 )
            return( "positive" );
         if ( myInt < 0 )
            return( "negative" );
         return ( "zero" );
      }

      // Defines a static method.
      public static String mySignMethod ( int myInt )  {
         if ( myInt > 0 )
            return( "+" );
         if ( myInt < 0 )
            return( "-" );
         return ( "" );
      }
   }

   public static void Main()  {

      // Creates one delegate for each method. For the instance method, an
      // instance (mySC) must be supplied. For the static method, use the
      // class name.
      mySampleClass mySC = new mySampleClass();
      myMethodDelegate myD1 = new myMethodDelegate( mySC.myStringMethod );
      myMethodDelegate myD2 = new myMethodDelegate( mySampleClass.mySignMethod );

      // Invokes the delegates.
      Console.WriteLine( "{0} is {1}; use the sign \"{2}\".", 5, myD1( 5 ), myD2( 5 ) );
      Console.WriteLine( "{0} is {1}; use the sign \"{2}\".", -3, myD1( -3 ), myD2( -3 ) );
      Console.WriteLine( "{0} is {1}; use the sign \"{2}\".", 0, myD1( 0 ), myD2( 0 ) );
   }
}
开发者ID:.NET开发者,项目名称:System,代码行数:44,代码来源:Delegate

输出:

5 is positive; use the sign "+".
-3 is negative; use the sign "-".
0 is zero; use the sign "".


注:本文中的System.Delegate类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。