迭代器模式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace IteratorSample
{
    class MyClass : IEnumerable
    {
        public IEnumerator GetEnumerator()
        {
            return new MyIterator(this);
        }
    }

    class MyIterator : IEnumerator
    {
        public MyIterator(MyClass myobject)
        {

        }

        public object Current 
        {
            get
            {
                return null;
            }
        }

        public bool MoveNext() 
        { 
            // todo 
            return true; 
        }

        public void Reset() { }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // ddddd
            MyClass myobject = new MyClass();

            // method 1 to iterate the collectio object
            IEnumerator itor = myobject.GetEnumerator();

            while (itor.MoveNext())
            {
                Console.WriteLine(itor.Current);
            }

            // method 2 to iterate the collectio object
            foreach (var item in myobject)
            {
                Console.WriteLine(item);
            }
        }
    }
}