C#职责链模式实例详解

作者：宋勇野字体：[增加减小] 来源：互联网时间：2017-05-28

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本文实例讲述了C#职责链模式。分享给大家供大家参考。具体如下：

ConcreteHandler1.cs如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
  public class ConcreteHandler1:Handler
  {
    public override void HandRequest(int request)
    {
      if(request>0&&request<10)
      {
        Console.WriteLine("{0} 处理请求 {1}",this.GetType().Name,request);
      }
      else if(successor!=null)
      {
        successor.HandRequest(request);
      }
    }
  }
}

</div>

ConcreteHandler2.cs如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
  public class ConcreteHandler2:Handler
  {
    public override void HandRequest(int request)
    {
      if (request > 10 && request < 20)
      {
        Console.WriteLine("{0} 处理请求 {1}", this.GetType().Name, request);
      }
      else if (successor != null)
      {
        successor.HandRequest(request);
      }
    }
  }
}

</div>

ConcreteHandler3.cs如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
  public class ConcreteHandler3:Handler
  {
    public override void HandRequest(int request)
    {
      if (request > 20 && request < 30)
      {
        Console.WriteLine("{0} 处理请求 {1}", this.GetType().Name, request);
      }
      else if (successor != null)
      {
        successor.HandRequest(request);
      }
    }
  }
}

</div>

Handler.cs如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
  public abstract class Handler
  {
    protected Handler successor;
    public void SetSuccessor(Handler successor) 
    {
      this.successor = successor;
    }
    public abstract void HandRequest(int request);
  }
}

</div>

Program.cs如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
  class Program
  {
    static void Main(string[] args)
    {
      Handler h1 = new ConcreteHandler1();
      Handler h2 = new ConcreteHandler2();
      Handler h3 = new ConcreteHandler3();
      h1.SetSuccessor(h2);
      h2.SetSuccessor(h3);
      int[] requests = {2,5,14,22,18,3,27,20};
      foreach(int request in requests)
      {
        h1.HandRequest(request);
      }
      Console.ReadKey();
    }
  }
}

</div>

希望本文所述对大家的C#程序设计有所帮助。

</div>

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C#职责链模式实例详解

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