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 = 0,

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("系统状态码")]
            [Display(Name = "失败", Description = "请求失败!")]
            Error = 1,

            /// <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 = 3,

            /// <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 = 4,

            /// <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 = 5,

            /// <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 = 6,

            /// <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 = 7,

            /// <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 = 8,

            /// <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 = 9,

            /// <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 = 10,

            /// <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 = 11,


            #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 = 220,

            /// <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 = 200,

            /// <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 = 201,


            /// <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 = 200,

            /// <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 = 201,
            #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 = 228,

            /// <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 = 200,

            /// <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 = 201,


            /// <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 = 202,

            /// <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 = 203,


            /// <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 = 200,

            /// <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 = 205,

            /// <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 = 205,


            /// <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 = 206,

            /// <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 = 203,


            #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 = 301,
            /// <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 = 302, 

            /// <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 = 303,

            /// <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 = 304,

            #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 = 401,

            /// <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 = 402,

            #endregion

            /// <summary>
            /// 系统状态码
            /// </summary>
            [Description("评估")]
            [Display(Name = "评估失败", Description = "评估失败!")]
            EvelErr = 403,
        }


        /// <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 > 0 ? attrs[0].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 = -1,
 
        [Description("正在上传")]
        Uploading = 0,
 
        [Description("上传成功")]
        UploadSuccess = 1
    }

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>0)
            {
                DescriptionAttribute[] attrs = memberInfos[0].GetCustomAttributes(typeof(DescriptionAttribute), false) as DescriptionAttribute[];   //获取描述特性
 
                if (attrs!=null&&attrs.Length>0)
                {
                    return attrs[0].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