枚舉備註讀取

public class EnumService
    {
        public static string GetDescription(Enum obj)
        {
            string objName = obj.ToString();
            Type t = obj.GetType();
            FieldInfo fi = t.GetField(objName);

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

            return arrDesc[0].Description;
        }
        public static string GetDescription(int enumValue)
        {
            VaildStateEnum obj = (VaildStateEnum)enumValue;
            return GetDescription(obj);
        }

        /// <summary>
        /// 獲取枚舉名稱
        /// </summary>
        /// <param name="enumValue">枚舉值</param>
        /// <returns></returns>
        public static string GetEnumName(int enumValue)
        {
            return Enum.GetName(typeof(VaildStateEnum), enumValue);
        }

        /// <summary>
        /// 獲取枚舉值
        /// </summary>
        /// <param name="enumName">枚舉名稱</param>
        /// <returns></returns>
        public static int GetEnumValue(string enumName)
        {
            VaildStateEnum enumValue;
            if (Enum.TryParse(enumName, out enumValue))
            {
                return (int)enumValue;
            }
            return 0;
        }
    }