enum的操作

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Globalization;
using System.Collections;
using System.Collections.Specialized;
using System.Reflection;

namespace enumkey
{
    class Program
    {
        static void Main(string[] args)
        {

            Type  enumType = typeof(TimeOfDay);
            string txt = string.Empty;
            foreach (int i in Enum.GetValues(typeof(TimeOfDay)))
               txt += i.ToString();

            string names=string.Empty;
            foreach (string temp in Enum.GetNames(typeof(TimeOfDay)))
              names+= temp;

          Styles styles = Styles.ShowBorder | Styles.ShowCaption;

            NameValueCollection nvc = new NameValueCollection();
            Type typeDescription = typeof(DescriptionAttribute);
            System.Reflection.FieldInfo[] fields = enumType.GetFields();
            string strText = string.Empty;
            string strValue = string.Empty;
            foreach (FieldInfo field in fields)
            {
                if (field.FieldType.IsEnum)
                {
                    strValue = ((int)enumType.InvokeMember(field.Name, BindingFlags.GetField, null, null, null)).ToString();
                    object[] arr = field.GetCustomAttributes(typeDescription, true);
                    if (arr.Length > 0)
                    {
                        DescriptionAttribute aa = (DescriptionAttribute)arr[0];
                        strText = aa.Description;
                    }
                    else
                    {
                        strText = field.Name;
                    }
                    nvc.Add(strText, strValue);
                }
            }
 
  
        }
      /// <summary>
        /// 从枚举类型和它的特性读出并返回一个键值对
        /// </summary>
        /// <param name="enumType">Type,该参数的格式为typeof(需要读的枚举类型)</param>
        /// <returns>键值对</returns>
      
        [Flags]
        enum Styles{
        ShowBorder = 1,         //是否显示边框
        ShowCaption = 2,        //是否显示标题
        ShowToolbox = 4         //是否显示工具箱
        }

        public enum TimeOfDay
        {
            [Description("上午")]
            Moning,
            [Description("下午")]
            Afternoon,
            [Description("晚上")]
            Evening,
        };

    }
}