索引器

简单的索引，索引时可以重载的
class Program
    {
        static void Main(string[] args)
        {
            int[] values = {3,5,9,8};
            int i = values[1];//将数据里的数用一个变量接受值
            Console.WriteLine(i);
        }
    }
索引器
class Program
    {
        static void Main(string[] args)
        {
            person p = new person();
            p[1] = "小明";//将p[1]赋值成小明
              Console.WriteLine(p[1] + p[2]);
            Console.WeiteLine(p1["hope",2,1])
            Console.ReadKey();
        }
        class person
        {
            string firstname = "大毛";
            string secondname = "二毛";
            public string this[stringname, int x,int y]
            {
                get
                {
                   return name+x+y;
                }
            }
            public string this[int index]//用户传过来的值
            {
                get
                {
                    if (index == 1)
                    {
                        return firstname;
                    }
                    else if(index==2)
                    {
                        return secondname;
                    }
                    else
                    {
                        throw new Exception("错误的序号");
                    }
                }
                set
                {
                     if (index == 1)
                    {
                         firstname=value;
                    }
                    else if(index==2)
                    {
                         secondname=value;
                    }
                    else
                    {
                        throw new Exception("错误的序号");
                    }
                }
            }
        }
    }