C#面向对象设计模式纵横谈——18 Iterator迭代器模式

主讲：李建忠

来源：http://www.microsoft.com/china/msdn/events/webcasts/shared/webcast/consyscourse/CsharpOOD.aspx

 

 

   1:  public interface IEnumerable

   2:  {

   3:      IEnumerator GetEnumerator();

   4:  }

   5:   

   6:  public interface IEnumerator

   7:  {

   8:      Object Current {get;}

   9:      bool Movenext();

  10:      void Reset();

  11:  }

  12:   

  13:  private class MyEnumerator: IEnumerator

  14:  {

  15:      int nIndex;

  16:      MyCollection collection;

  17:   

  18:      public MyEnumerator(MyCollection coll)

  19:      {

  20:          collection=coll;

  21:          nIndex=-1;

  22:      }

  23:   

  24:      public bool MoveNext()

  25:      {

  26:          nIndex++;

  27:          return (nIndex<collection.items.GetLength(0));

  28:      }

  29:   

  30:      public int Current

  31:      {

  32:          get

  33:          {

  34:              return (collection.items[nIndex]);

  35:          }

  36:      }

  37:   

  38:      public void Reset()

  39:      {

  40:          nIndex=-1;

  41:      }

  42:  }