.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 > 0)
            {
                return attributes[0].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 > 0)
            {
                return attributes[0].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 = 1, 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 > 0)
                    {
                        return EnumAttributes[0].Description;
                    }
                }
            }
            return "";
        }