C#获取枚举的描述

 public enum Demos
    {
        PreValidation = 10,
        PreOperation = 20,
        PostOperation = 40
    }

   var dsa=Enum.GetName(typeof(Demos),40); //40为枚举的值
    Console.WriteLine(dsa);                //打印出来则是枚举的描述

 /// <summary>
    /// 状态编码枚举
    /// </summary>
    public enum StatusCode
    {
        /// <summary>
        /// 操作成功
        /// </summary>
        [Description("操作成功")]
        Success = 2000,

        /// <summary>
        /// 参数缺失
        /// </summary>
        [Description("参数缺失")]
        MissingParam = 3000,

        /// <summary>
        /// 操作失败
        /// </summary>
        [Description("操作失败")]
        Failure = 4000
    }


            Type type = StatusCode.Success.GetType();
            FieldInfo fd = type.GetField(StatusCode.Success.ToString());
            if (fd == null) return;

            object[] attrs = fd.GetCustomAttributes(typeof(DescriptionAttribute), false);
            foreach (DescriptionAttribute attr in attrs)
            {
                Console.WriteLine(attr.Description);
            }