c# enum 解析

解析定义的枚举

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public enum OrderPaymentStatus    {        /// <summary>        /// 未支付        /// </summary>        [Description("未支付")]        No=1,        /// <summary>        /// 已支付        /// </summary>        [Description("已支付")]        Yes    }

解析类

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public static class EnumHelper     {         private static Hashtable enumDesciption = EnumHelper.GetDescriptionContainer();           public static string ToDescription(this Enum value)         {             if (value == null)             {                 return "";             }             Type type = value.GetType();             string name = Enum.GetName(type, value);             return EnumHelper.GetDescription(type, name);         }           public static Dictionary<int, string> ToDescriptionDictionary<TEnum>()         {             Type typeFromHandle = typeof(TEnum);             Array values = Enum.GetValues(typeFromHandle);             Dictionary<int, string> dictionary = new Dictionary<int, string>();             foreach (Enum item in values)             {                 dictionary.Add(Convert.ToInt32(item), item.ToDescription());             }             return dictionary;         }           public static Dictionary<int, string> ToDictionary<TEnum>()         {             Type typeFromHandle = typeof(TEnum);             Array values = Enum.GetValues(typeFromHandle);             Dictionary<int, string> dictionary = new Dictionary<int, string>();             foreach (Enum item in values)             {                 dictionary.Add(Convert.ToInt32(item), item.ToString());             }             return dictionary;         }           private static bool IsIntType(double d)         {             return (double)(int)d != d;         }           private static Hashtable GetDescriptionContainer()         {             EnumHelper.enumDesciption = new Hashtable();             return EnumHelper.enumDesciption;         }           private static void AddToEnumDescription(Type enumType)         {             EnumHelper.enumDesciption.Add(enumType, EnumHelper.GetEnumDic(enumType));         }           private static Dictionary<string, string> GetEnumDic(Type enumType)         {             Dictionary<string, string> dictionary = new Dictionary<string, string>();             FieldInfo[] fields = enumType.GetFields();             FieldInfo[] array = fields;             foreach (FieldInfo fieldInfo in array)             {                 if (fieldInfo.FieldType.IsEnum)                 {                     object[] customAttributes = fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);                     dictionary.Add(fieldInfo.Name, ((DescriptionAttribute)customAttributes[0]).Description);                 }             }             return dictionary;         }           private static string GetDescription(Type enumType, string enumText)         {             if (string.IsNullOrEmpty(enumText))             {                 return null;             }             if (!EnumHelper.enumDesciption.ContainsKey(enumType))             {                 EnumHelper.AddToEnumDescription(enumType);             }             object obj = EnumHelper.enumDesciption[enumType];             if (obj != null && !string.IsNullOrEmpty(enumText))             {                 Dictionary<string, string> dictionary = (Dictionary<string, string>)obj;                 return dictionary[enumText].Split('|')[0];             }             throw new ApplicationException("不存在枚举的描述");         }     }