using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Reflection;
using System.ComponentModel;namespace EnumApp
{class Program{static void Main(string[] args){NameValueCollection nvc = GetNVCFromEnumValue(typeof(TimeOfDay));Console.WriteLine("1. 反射方式对TimeOfDay结构体的罗列：");foreach (string key in nvc.Keys){Console.WriteLine(string.Format(key + ": {0}", nvc[key]));}Console.WriteLine("\n2. 直接方式1，对TimeOfDay结构体的罗列：");Dictionary<string, string> dic = GetEnumDic(typeof(TimeOfDay));foreach (string key in dic.Keys){Console.WriteLine(key + ":{0}", dic[key]);}Console.WriteLine("\n3. 直接方式2，对TimeOfDay结构体中某一项的描述：");Console.WriteLine(string.Format(TimeOfDay.Moning.ToString() + ":{0}", GetEnumDes(TimeOfDay.Moning)));}/// <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>public static NameValueCollection GetNVCFromEnumValue(Type enumType){System.Reflection.FieldInfo[] fields;string strText, strValue;NameValueCollection nvc = new NameValueCollection();Type typeDescription = typeof(DescriptionAttribute);fields = enumType.GetFields();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(strValue, strText);}}return nvc;}/// <summary>/// 返回 Dic<枚举项，描述>/// </summary>/// <param name="enumType"></param>/// <returns>Dic<枚举项，描述></returns>public static Dictionary<string, string> GetEnumDic(Type enumType){Dictionary<string, string> dic = new Dictionary<string, string>();FieldInfo[] fieldinfos = enumType.GetFields();foreach (FieldInfo field in fieldinfos){if (field.FieldType.IsEnum){Object[] objs = field.GetCustomAttributes(typeof(DescriptionAttribute), false);dic.Add(field.Name, ((DescriptionAttribute)objs[0]).Description);}}return dic;}/// <summary>/// 获得某个枚举项的描述/// </summary>/// <param name="value"></param>/// <returns></returns>public static string GetEnumDes(object value){FieldInfo fieldinfo = value.GetType().GetField(value.ToString());Object[] objs = fieldinfo.GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);if (objs == null || objs.Length == 0){return value.ToString();}else{return ((DescriptionAttribute)objs[0]).Description;}}}public enum TimeOfDay{[Description("上午")]Moning = 0,[Description("下午")]Afternoon,[Description("晚上")]Evening,};//public enum TimeOfDays//{//    上午,//    下午,//    晚上//};
}