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  • 枚举 IEnumerable

    namespace _03
    {
    class Program
    {

    public static void Main()
    {
    Person person = new Person();
    IEnumerator ienu= person.GetEnumerator();
    while (ienu.MoveNext())
    {
    Console.WriteLine(ienu.Current);
    }
    }
    }

    class Person :IEnumerable // 返回一个循环访问集合的枚举数
    {
    private string[] _names = { "夹心饼干","大师","香肠"};
    private string _email;

    private int _age;
    public int Age
    {
    get { return _age; }
    set { _age = value; }
    }
    public string Email
    {
    get
    { return _email; }
    set
    { _email = value; }
    }
    public string[] Names
    {
    get { return _names; }
    set { _names = value; }
    }
    private string _name;
    public string Name
    {
    get { return _name; }
    set { _name = value; }
    }
    // 一个可用于循环访问集合的 System.Collections.IEnumerator 对象。

    public IEnumerator GetEnumerator()
    {
    return new Person1(Names);
    }
    }
    class Person1:IEnumerator
    {
    public Person1(string[] names)
    {
    _names = names;
    }
    public Person1() { }
    private string[] _names;
    public string[] Names
    {
    get { return _names; }
    set { _names = value; }
    }
    private int index = -1;
    public int Index
    {
    get { return index; }
    set { index = value; }
    }
    public string this[int index]
    {
    get { return this[index]; }
    }
    public object Current
    {
    get
    {
    if(Index<Names.Length&&Index>=0)
    {
    return Names[Index];
    }
    else
    {
    throw new IndexOutOfRangeException();
    }
    }

    }

    public bool MoveNext()
    {
    if (index+1<Names.Length)
    {
    index++;
    return true;

    }
    return false;
    }
    public void Reset()
    {
    index = -1;
    }
    }


    }

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  • 原文地址:https://www.cnblogs.com/wrnsweet/p/6182294.html
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