QiFeng.ZWY.Utility/DataHelper/EnumUtil.cs

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using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Web.Mvc;
using System.Web.WebPages.Html;

namespace QiFeng.LMSD.Utility
{
    /// <summary>
    /// EnumUtil
    /// </summary>
    public static class EnumUtil
    {
        private static readonly Hashtable htCache = Hashtable.Synchronized(new Hashtable());

        public static int GetValue(this System.Enum obj)
        {
            return obj.GetHashCode();
        }

        /// <summary>
        /// 获取枚举对应的Description内容
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public static IList<KeyValuePair<string, string>> GetEnumDescriptions(Type type)
        {
            if (htCache.Contains(type))
                return htCache[type] as IList<KeyValuePair<string, string>>;
            IList<KeyValuePair<string, string>> dict = GetDictionary(type);
            htCache[type] = dict;
            return dict;
        }

        private static IList<KeyValuePair<string, string>> GetDictionary(Type type)
        {
            FieldInfo[] fields = type.GetFields();
            IList<KeyValuePair<string, string>> dict = new List<KeyValuePair<string, string>>();
            for (int i = 1; i < fields.Length; i++)
            {
                FieldInfo item = fields[i];
                string desription;
                object[] objs = item.GetCustomAttributes(typeof(DescriptionAttribute), false);
                if (objs != null && objs.Length != 0)
                {
                    DescriptionAttribute da = (DescriptionAttribute)objs[0];
                    desription = da.Description;
                }
                else
                {
                    desription = item.Name;
                }
                dict.Add(new KeyValuePair<string, string>(((int)Enum.Parse(type, item.Name)).ToString(), desription));
            }
            return dict;
        }