enum num{one,two,there};
定义后，我想当输入0时显示one,输入1时显示two,
知道mei ju的元素下标，如何访问显示出元素名？

???

num n=num.one;
当输入0时显示 n

using System;
using System.Reflection;
namespace ConsoleApplication7
{
    class Program
    {
        enum num { one=1, two, three };
        static void Main(string[] args)
        {
            var numT = typeof(num);
            var input = 0;
            var myNum = new num();
            while ((input=Convert.ToInt32(Console.ReadLine())) != -1)
            {
                foreach (var numField in numT.GetFields(BindingFlags.Public | BindingFlags.Static))
                {
                   var value= (int)numField.GetValue(myNum);
                   if (value == input)
                   {
                       Console.WriteLine(numField.Name);
                   }
                }
            }
            Console.ReadLine();
            
        }
    }
}

不知道这是不是你想要的效果.

我来帮你们顶顶贴子

谢谢，就是3楼这个

namespace test
{
    class Program
    {
        public enum Num
        {
         one ,two,three,four
        }
        static void Main(string[] args)
        {
            string temp="";
            while (temp!="end")
            {
                temp = Console.ReadLine();
                int readnum = Convert.ToInt32(temp);
                Num num = (Num)readnum;

                switch (readnum)
                {
                    case 0:
                        Console.WriteLine(num);
                        break;
                    case 1:
                        Console.WriteLine(num);
                        break;
                    case 2:
                        Console.WriteLine(num);
                        break;
                    case 3:
                        Console.WriteLine(num);
                        break;
                    default:
                        Console.WriteLine("没定义");
                        break;
                }
            }
        }
    }
}