C#中的索引器

    class Program
    {
        static void Main(string[] args)
        {
            man mm = new man();
            mm[0] = "jingya";
            mm[1] = "dongbao";
            mm[2] = "xiaolizi";
            mm[3] = "xializi";
            for (int i = 0; i < 10 ; i++)
            {
                Console.WriteLine(mm[i]);
            }
            Console.ReadKey();
        }
        
    }
    class man
    {
        public man()
        {
            for (int i = 0; i < 10; i++)
            {
                manlist[i] = "N.A.";
            }
        }
        private string[] manlist = new string[10];        // 其实外面的索引器就是在这里给定义好大小的，这就是这个方法的局限性
        public string this[int index]
        {
            set { manlist[index] = value; }
            get { return manlist[index]; }
        }
    }

// System.Windows.Forms.Control
Control[] arrCtrl = new Control[5];
arrCtrl[0] = new Button();
arrCtrl[3] = new Label();

            a[] s =new  a[10];
            s.add()

            int[] aa = new int[10];
            aa[0] = 0;