.NET--------枚举扩展方法（枚举转list，获取枚举描述）

         /// <summary>
         /// get enum description by name
         /// </summary>
         /// <typeparam name="T">enum type</typeparam>
         /// <param name="enumItemName">the enum name</param>
         /// <returns></returns>
         public static string GetDescriptionByName<T>(T enumItemName)
         {
             FieldInfo fi = enumItemName.GetType().GetField(enumItemName.ToString());

             DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(
                 typeof(DescriptionAttribute), false);

             if (attributes != null && attributes.Length > )
             {
                 return attributes[].Description;
             }
             else
             {
                 return enumItemName.ToString();
             }
         }  

         /// <summary>
         /// 获取描述
         /// </summary>
         /// <param name="en"></param>
         /// <returns></returns>
         public static string GetEnumText(this Enum en)
         {
             FieldInfo fi = en.GetType().GetField(en.ToString());

             DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(
                 typeof(DescriptionAttribute), false);

             if (attributes != null && attributes.Length > )
             {
                 return attributes[].Description;
             }
             else
             {
                 return en.ToString();
             }
         }

         /// <summary>
         /// 枚举转list
         /// </summary>
         /// <typeparam name="T"></typeparam>
         /// <returns></returns>
         public static List<EnumModel> ConvertEnumToList<T>()
         {
             List<EnumModel> list = new List<EnumModel>();

             foreach (var e in Enum.GetValues(typeof(T)))
             {
                 EnumModel m = new EnumModel();
                 m.Value = Convert.ToInt32(e);
                 m.Description = EnumHelper.GetDescriptionByName((T)e);
                 list.Add(m);
             }
             return list;
         }

         public class EnumModel
         {
             public int Value { get; set; }
             public string Description { get; set; }
         }

         /// <summary>
         /// 根据枚举值获得枚举描述
         /// </summary>
         /// <param name="e"></param>
         /// <param name="value"></param>
         /// <returns></returns>
         public static String GetEnumDesc(this Type e, int? value)
         {
             FieldInfo[] fields = e.GetFields();
             for (int i = , count = fields.Length; i < count; i++)
             {
                 if ((int)System.Enum.Parse(e, fields[i].Name) == value)
                 {
                     DescriptionAttribute[] EnumAttributes = (DescriptionAttribute[])fields[i].
                 GetCustomAttributes(typeof(DescriptionAttribute), false);
                     if (EnumAttributes.Length > )
                     {
                         return EnumAttributes[].Description;
                     }
                 }
             }
             return "";
         }