本文内容来源 http://blogs.msdn.com/abhinaba/archive/2005/10/20/483000.aspx

在.net 中，枚举的ToString 方法不能够被重写，有时候我们不想直接显示枚举的标识的时候，想已另一种方式替代显示内容，就可以采取下面介绍的这种方式来实现。

using System;

using System.Reflection;

enum Coolness : byte
{

    [Description("Not so cool")]

    NotSoCool = 5,

    Cool, // since description same as ToString no attr are used

    [Description("Very cool")]

    VeryCool = NotSoCool + 7,

    [Description("Super cool")]

    SuperCool

}

class Description : Attribute
{

    public string Text;

    public Description(string text)
    {

        Text = text;

    }
}

class Program
    {
        static string GetDescription(Enum en)
        {
            Type type = en.GetType();
            MemberInfo[] memInfo = type.GetMember(en.ToString());
            if (memInfo != null && memInfo.Length > 0)
            {
                object[] attrs = memInfo[0].GetCustomAttributes(typeof(Description),
                                                                false);
                if (attrs != null && attrs.Length > 0)
                    return ((Description)attrs[0]).Text;
            }
            return en.ToString();
        }
        static void Main(string[] args)
        {
            Coolness coolType1 = Coolness.Cool;
            Coolness coolType2 = Coolness.NotSoCool;
            Console.WriteLine(GetDescription(coolType1));
            Console.WriteLine(GetDescription(coolType2));
        }
    }