ENUM帮助类

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;using System.Reflection;

namespace CommonFunction{   public class EnumClass    {       private static object refLock = new object();       private static EnumClass instance=null;

       public static EnumClass Instance       {           get {               lock (refLock)               {                   if (instance == null)                   {                       lock (refLock)                       {                           instance = new EnumClass();                       }                   }               }               return instance;           }       }

              /// <summary>       /// 获取指定枚举类型的键值对集合       /// </summary>       /// <param name="type">枚举类型</param>       /// <returns></returns>       public Hashtable GetKeysAndValues(Type type)       {           if (!CheckType(type))           {               return null;           }

           Hashtable list = new Hashtable();           foreach (string key in Enum.GetNames(type))           {               string val=Enum.Format( type, Enum.Parse(type, key), "d");               list.Add(key,val);           }

           return list;       }

       /// <summary>       /// 获取枚举类型元素集合       /// </summary>       /// <param name="type">枚举类型</param>       /// <returns></returns>       public Array GetKeys(Type type)       {           if (!CheckType(type))           {               return null;           }

           //检索指定枚举中常数值的数组           return Enum.GetValues(type);       }

       /// <summary>       /// 检验枚举类型       /// </summary>       /// <param name="type">类型</param>       /// <returns></returns>       private bool CheckType(Type type)       {           if (type == null)           {               return false;           }

           if (!type.IsEnum)           {               throw new Exception(type.FullName + "不是枚举类型");           }

           return true;       }

       /// <summary>       /// 获取枚举类型值集合       /// </summary>       /// <param name="type">枚举类型</param>       /// <returns></returns>       public List<int> GetValues(Type type)       {           Array array = GetKeys(type);           List<int> list = new List<int>();           foreach (object obj in array)           {               list.Add((int)obj);           }

           return list;       }            }}

 

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;

namespace CommonFunction{    class Program    {        enum Days { Sunday = 0, Monday = 1, Tuesday = 2, Wednesday = 3, Thursday = 4, Friday = 5, Saturday = 6 };        static void Main(string[] args)        {            Hashtable hashtable= EnumClass.Instance.GetKeysAndValues(typeof(Days));            Console.WriteLine("---------枚举类型键值对---------");            foreach (DictionaryEntry de in hashtable)            {                Console.WriteLine(de.Key+" = "+de.Value);            }            Console.WriteLine();

            Console.WriteLine("---------枚举类元素---------");            Array array = EnumClass.Instance.GetKeys(typeof(Days));            foreach (Days day in array)            {                Console.WriteLine(day);            }            Console.WriteLine();

            Console.WriteLine("---------枚举类值---------");            List<int> list = EnumClass.Instance.GetValues(typeof(Days));            foreach (int i in list)            {                Console.WriteLine(i);            }            Console.ReadLine();        }    }}