asp.net-mvc 如何获得'System.Web.Http，版本=5.2.3.0？
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How to get 'System.Web.Http, Version=5.2.3.0?
提问by John Hadikusumo
I just created an MVC5 project and added several packages from nuget, but then when I compiled the project, i got this error. It seems one of the packages really depends on system.web.http version 5.2.3.0, which i couldn't find anywhere. I just wonder how to get the latest version of system.web.http ?
我刚刚创建了一个 MVC5 项目并从 nuget 添加了几个包，但是当我编译该项目时，出现此错误。似乎其中一个软件包确实依赖于 system.web.http 版本 5.2.3.0，我在任何地方都找不到。我只是想知道如何获得最新版本的 system.web.http ？
Error 2 Assembly 'System.Web.Http.WebHost, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' uses 'System.Web.Http, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Http, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
d:\Backup 2014-12-25\Website-Projects\www.ptsol.com.au\packages\Microsoft.AspNet.WebApi.WebHost.5.2.3\lib\net45\System.Web.Http.WebHost.dll
回答by Roman Patutin
In Package Manager Console
在包管理器控制台中
Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
回答by Bracher
One way to fix it is by modifying the assembly redirect in the web.config file.
修复它的一种方法是修改 web.config 文件中的程序集重定向。
Modify the following:
修改以下内容：
<dependentAssembly>
<assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
to
到
<dependentAssembly>
<assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="4.0.0.0" />
</dependentAssembly>
So the oldVersion attribute should change from "...-4.0.0.0" to "...-5.2.3.0".
因此 oldVersion 属性应从“...-4.0.0.0”更改为“...-5.2.3.0”。
回答by Bob Koury
I did Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3but it still did not work. Then looked in my project bin folder and saw that it still had the old System.Web.Mvc file.
我做到了，Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3但它仍然不起作用。然后查看我的项目 bin 文件夹，发现它仍然有旧的 System.Web.Mvc 文件。
So I manually copied the newer file from the package to the bin folder. Then I was up and running again.
所以我手动将较新的文件从包中复制到 bin 文件夹中。然后我又跑起来了。
回答by Vitali Siamenau
Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
安装包 Microsoft.AspNet.WebApi.Core -version 5.2.3
Then in the project Add Reference -> Browse. Push the browse button and go to the C:\Users\UserName\Documents\Visual Studio 2015\Projects\ProjectName\packages\Microsoft.AspNet.Mvc.5.2.3\lib\net45 and add the needed .dll file
然后在项目中添加引用 -> 浏览。按浏览按钮并转到 C:\Users\UserName\Documents\Visual Studio 2015\Projects\ProjectName\packages\Microsoft.AspNet.Mvc.5.2.3\lib\net45 并添加所需的 .dll 文件
回答by Doug Wiley
The packages you installed introduced dependencies to version 5.2.3.0 dll's as user Bracher showed above. Microsoft.AspNet.WebApi.Cors is an example package. The path I take is to update the MVC project prtheitroadto any package installs:
您安装的软件包引入了对 5.2.3.0 版 dll 的依赖，如上图用户 Bracher 所示。Microsoft.AspNet.WebApi.Cors 是一个示例包。我采取的路径是将 MVC 项目更新为任何软件包安装：
Install-Package Microsoft.AspNet.Mvc -Version 5.2.3
回答by Ram Kishore K
Uninstalling and re-installing the NuGet package worked for me.
卸载并重新安装 NuGet 包对我有用。
- Remove any old reference from the project.
- 从项目中删除任何旧引用。
Execute this in the Package Manager Console:
在包管理器控制台中执行此操作：
UnInstall-Package Microsoft.AspNet.WebApi.Core -version 5.2.3Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
UnInstall-Package Microsoft.AspNet.WebApi.Core -version 5.2.3Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
