C# 如何定义一个带泛型属性的返回类型类 ，用来做统一的后端数据返回格式

一、简单诉求：

　　1、请求成功、失败标识：Code

　　2、请求结果说明：Message

　　3、返回数据：Data

二、简单诉求分析：

　　1、诉求前两条没什么好说的

　　2、针对诉求3，实际上需要根据不同的返回数据才能确定数据类型，因此我们想到采用泛型

三、话不多说，直接上代码

CommonServiceResponse.cs

using System;

namespace Awing.IBMS.MyServiceResponse
{
    /// <summary>
    /// 数据类型转换  data.ToCommonServiceResponse("成功！")
    /// </summary>
    public static class CommonServiceResponseEX
    {
        public static CommonServiceResponse<T> ToCommonServiceResponse<T>(this T data,string message="") where T:class
        {
            return CommonServiceResponse<T>.Success(message, data);
        }
    }
    /// <summary>
    /// 返回类
    /// </summary>
    /// <typeparam name="T"></typeparam>
     public  class CommonServiceResponse<T> where  T :class
    {
        public MyResponseCode Code
        {
            get;
            set;
        }
        public string Message
        {
            get;
            set;
        }

        //返回数据
        public T Data
        {
            get;
            set;
        }

        /// <summary>
        /// 成功
        /// </summary>
        /// <param name="message"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static CommonServiceResponse<T> Success(string message, T data)
        {
            return new CommonServiceResponse<T>
            {
                Message = message,
                Code = MyResponseCode.Success,
                Data= data
            };
        }

        /// <summary>
        /// 失败
        /// </summary>
        /// <param name="code"></param>
        /// <param name="message"></param>
        /// <returns></returns>
        public static CommonServiceResponse<T> Fail( string message = "")
        {
            return new CommonServiceResponse<T>
            {
                Message = message,
                Code =MyResponseCode.Failed
            };
        }       
    }
}

 然后发下自己想复杂了，实际我不需要在乎数据是什么类型的，他是什么类型我就返回什么类型即可，采用object和dynamic。

using System;

namespace Awing.IBMS.MyServiceResponse
{
    /// <summary>
    /// 数据类型转换  data.ToCommonServiceResponse("成功！")
    /// </summary>
    public static class CommonServiceResponseEX
    {
        public static CommonServiceResponse ToCommonServiceResponse(this object data,string message="") 
        {
            return CommonServiceResponse.Success(message, data);
        }
    }

    /// <summary>
    /// 返回类
    /// </summary>
    public  class CommonServiceResponse 
    {
        public MyResponseCode Code
        {
            get;
            set;
        }
        public string Message
        {
            get;
            set;
        }

        //返回数据
        public dynamic Data
        {
            get;
            set;
        }

        /// <summary>
        /// 成功
        /// </summary>
        /// <param name="message"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static CommonServiceResponse Success(string message, dynamic data=null)
        {
            return new CommonServiceResponse
            {
                Message = message,
                Code = MyResponseCode.Success,
                Data= data
            };
        }

        /// <summary>
        /// 失败
        /// </summary>
        /// <param name="message"></param>
        /// <returns></returns>
        public static CommonServiceResponse Fail( string message = "")
        {
            return new CommonServiceResponse
            {
                Message = message,
                Code =MyResponseCode.Failed
            };
        }
        
    }
}

其中，MyServiceResponse.cs

using System;namespace Awing.IBMS.MyServiceResponse
{
    public enum MyResponseCode
    {
        Failed = 0,
        Success = 20000
    }
}

打完收工！