一、C#获取特性(坑)

一、C#获取特性(坑)

            [Description("系统状态码")]
            [Display(Name = "成功", Description = "请求成功!")]
            Success = 0,

            [Description("系统状态码")]
            [Display(Name = "成功", Description = "请求错误!")]
            err= 0,

　　　　　　 

当你

var s=SatausCode.CommonCodeEnum.err.GetDisplayDescription();  //获取err特性 但是因为都是0,那么就匹配第一个特性的，而不是根据我err  来的，  因为 我很多的时候就会使用到200

各位

--

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Reflection;

namespace Test
{

    class Program
    {

        static void Main(string[] args)
        {
           var s=SatausCode.CommonCodeEnum.GetReqCreditDatalOK.GetDisplayDescription();
        }

    }

    public static class SatausCode
    {
        public enum CommonCodeEnum
        {
            /// <summary>
            /// 成功
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "成功", Description = "请求成功!")]
            Success = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "失败", Description = "请求失败!")]
            Error = ,

            /// <summary>
            /// 验签状态码
            /// </summary>
            [Description("验签状态码")]
            [Display(Name = "部分参数不完整", Description = "部分参数不完整!")]
            Incomplete = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "内部服务异常", Description = "内部服务异常!")]
            Ex = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("验签状态码")]
            [Display(Name = "timeStamp参数异常", Description = "timeStamp参数异常!")]
            TimeStamp_Str = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("验签状态码")]
            [Display(Name = "请求超时", Description = "请求超时!")]
            Timeout = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("验签状态码")]
            [Display(Name = "用户权限限制", Description = "用户权限限制!")]
            Power = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("验签状态码")]
            [Display(Name = "签名不合法", Description = "签名不合法!")]
            Sign = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("区分城市状态码")]
            [Display(Name = "未授权此城市", Description = "未授权此城市!")]
            DisArea = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "远程服务器返回错误: (404) 未找到。", Description = "远程服务器返回错误: (404) 未找到!")]
            NoFind = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "远程服务器返回错误: (500) 内部服务器错误。", Description = "远程服务器返回错误: (500) 内部服务器错误。")]
            NoErr = ,

            #region  房估估
            /// <summary>
            /// 房估估
            /// </summary>
            [Description("第三方")]
            [Display(Name = "查询小区/地址不能为空", Description = "查询小区/地址不能为空!")]
            VillageNull = ,

            /// <summary>
            /// 房估估
            /// </summary>
            [Description("房估估第三方")]
            [Display(Name = "小区匹配", Description = "小区数据获取成功!")]
            GetVillageOk = ,

            /// <summary>
            /// 房估估 ------------报错信息 用它的 暂不使用
            /// </summary>
            [Description("房估估第三方")]
            [Display(Name = "小区匹配", Description = "小区获取数据失败!")]
            GetVillageErr = ,

            /// <summary>
            /// 房估估
            /// </summary>
            [Description("房估估第三方")]
            [Display(Name = "房估估小区评价", Description = "小区评价数据成功!")]
            GetHouseEvalOk = ,

            /// <summary>
            /// 房估估
            /// </summary>
            [Description("房估估第三方")]
            [Display(Name = "房估估小区评价", Description = "小区评价数据成功!")]
            GetHouseEvalErr = ,
            #endregion

            #region 同盾

            /// <summary>
            ///
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "请求凭证无效", Description = "请求凭证无效!")]
            CertErr = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "请求用户数据", Description = "请求用户数据成功!")]
            GetReqCreditDatalOK = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "请求用户数据", Description = "请求用户数据失败!")]
            GetReqCreditDatalErr = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "获取用户数据", Description = "获取用户数据成功!")]
            GetCreditDataOK = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "获取用户数据", Description = "获取用户数据失败!")]
            GetCreditDataErr = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "获取详情成功", Description = "获取详情成功!")]
            GetCreditDetailOK = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "小区地址有误", Description = "小区地址有误!")]
            Getvillage = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "获取数据详情", Description = "获取数据详情失败!")]
            GetCreditDetailErr = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "请求数据", Description = "请求数据详情成功!")]
            GetReqCreditDetailOK = ,

            /// <summary>
            /// 征信
            /// </summary>
            [Description("征信第三方")]
            [Display(Name = "请求数据", Description = "请求数据详情失败!")]
            GetReqCreditDetailErr = ,

            #endregion

            #region 房估估验证
            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("房估估验证")]
            [Display(Name = "输入房产面积数据格式有误", Description = "输入房产面积数据格式有误!")]
            Areaformat = ,
            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("房估估验证")]
            [Display(Name = "输入层数据格式有误", Description = "输入层数据格式有误!")]
            Floorformat = , 

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("房估估验证")]
            [Display(Name = "输入总楼层数据格式有误", Description = "输入总楼层数据格式有误!")]
            TotalFloorformat = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("房估估验证")]
            [Display(Name = "所在楼层大于总楼层数据有误", Description = "所在楼层大于总楼层数据有误!")]
            TotalBigFloorformat = ,

            #endregion

            #region 同盾验证
            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("同盾验证")]
            [Display(Name = "身份证号格式不对", Description = "身份证号格式不对!")]
            CardIdformat = ,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("同盾验证")]
            [Display(Name = "手机号格式不对", Description = "手机号格式不对!")]
            Telformat = ,

            #endregion

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("评估")]
            [Display(Name = "评估失败", Description = "评估失败!")]
            EvelErr = ,
        }

        /// <summary>
        /// 获取特性 (DisplayAttribute) 的说明；如果未使用该特性，则返回枚举的名称。
        /// </summary>
        /// <param name="enumValue"></param>
        /// <returns></returns>
        public static string GetDisplayDescription(this Enum enumValue)
        {
            FieldInfo fieldInfo = enumValue.GetType().GetField(enumValue.ToString());
            DisplayAttribute[] attrs =
                fieldInfo.GetCustomAttributes(typeof(DisplayAttribute), false) as DisplayAttribute[];

            return attrs.Length >  ? attrs[].Description : enumValue.ToString();
        }

    }

}

二、解决方案

1、状态码（模块化区分）

/// <summary>
    /// 上传状态
    /// </summary>
    public enum UploadState
    {
        [Description("上传失败")]
        UploadFailed = -,

        [Description("正在上传")]
        Uploading = ,

        [Description("上传成功")]
        UploadSuccess =
    }

方法

/// <summary>
        /// 获取枚举的描述
        /// </summary>
        /// <param name="en">枚举</param>
        /// <returns>返回枚举的描述</returns>
        public static string GetDescription(Enum en)
        {
            Type type = en.GetType();   //获取类型
            MemberInfo[] memberInfos = type.GetMember(en.ToString());   //获取成员
            if (memberInfos!=null&&memberInfos.Length>)
            {
                DescriptionAttribute[] attrs = memberInfos[].GetCustomAttributes(typeof(DescriptionAttribute), false) as DescriptionAttribute[];   //获取描述特性

                if (attrs!=null&&attrs.Length>)
                {
                    return attrs[].Description;    //返回当前描述
                }
            }
            return en.ToString();
        }

调用代码

EnumService.GetDescription(UploadState.UploadSuccess)

2、指定名称获取特性描述