namespace IEnumeratorSample

{

    using System;

    using System.Collections;

    using System.Collections.Generic;

    internal class Person : IEnumerable<PersonEnum>

    {

        private ICollection<PersonEnum> PersonList { get; set; }

        public Person()

        {

            this.PersonList = new List<PersonEnum>();

        }

        public IEnumerator GetEnumerator()//实现接口

        {

            return this.PersonList.GetEnumerator();

        }

        public void AddItem(PersonEnum entity)

        {

            if (PersonList == null)

            {

                PersonList = new List<PersonEnum>();

            }

            PersonList.Add(entity);

        }

        public bool Remove(PersonEnum entity)

        {

            return PersonList.Remove(entity);

        }

        IEnumerator<PersonEnum> IEnumerable<PersonEnum>.GetEnumerator()

        {

            return this.PersonList.GetEnumerator();

        }

    }

    internal class PersonEnum

    {

        public string Name;

        public string Age;

        public PersonEnum(string name, string age)

        {

            Name = name;

            Age = age;

        }

    }

    internal class Program

    {

        private static void Main(string[] args)

        {

            PersonEnum one = new PersonEnum("leo", "");

            PersonEnum two = new PersonEnum("Ray", "");

            Person persons = new Person();

            persons.AddItem(one);

            persons.AddItem(two);

            foreach (PersonEnum person in persons)

            {

                Console.WriteLine(person.Name);

            }

        }

    }

}