索引的重载 str["name"] str[i]

 class Program
    {
        static void Main(string[] args)
        {
            IndexClass names = new IndexClass();
            names[0] = "Zara";
            names[1] = "Riz";
            names[2] = "Nuha";
            names[3] = "Asif";
            names[4] = "Davinder";
            names[5] = "Sunil";
            names[6] = "Rubic";
            // 使用带有 int 参数的第一个索引器
            for (int i = 0; i < IndexClass.size; i++)
            {
                Console.WriteLine(names[i]);
            }
            // 使用带有 string 参数的第二个索引器
            Console.WriteLine(names["Nuha"]);
            Console.ReadKey();

        }
    }
    class IndexClass
    {
        private string[] namelist = new string[size];
        public static int size = 10;
        //// --构造函数赋值
        public IndexClass()
        {
            for (int i = 0; i < size; i++)
            {
                namelist[i] = "N. A.";
            }

        }
        //重载索引
        public string this[int index]
        {
            get
            {
                string tmp;

                if (index >= 0 && index <= size - 1)
                {
                    tmp = namelist[index];
                }
                else
                {
                    tmp = "";
                }

                return (tmp);
            }
            set
            {
                if (index >= 0 && index <= size - 1)
                {
                    namelist[index] = value;
                }
            }
        }
        public int this[string name]
        {
            get
            {
                int index = 0;
                while (index < size)
                {
                    if (namelist[index] == name)
                    {
                        return index;
                    }
                    index++;
                }
                return index;
            }

        }


    }