如何获取‘ System.Web.Http，Version = 5.2.3.0？

我刚刚创建了一个 MVC5项目，并添加了几个来自 nuget 的包，但是当我编译这个项目时，我得到了这个错误。似乎其中一个软件包真的依赖于 System.web.http 版本5.2.3.0，我在任何地方都找不到它。我只是想知道如何获得 System.web.http 的最新版本？

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
133058 次浏览
小开

In Package Manager Console

Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3

小开

I did Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3 but it still did not work. Then looked in my project bin folder and saw that it still had the old System.Web.Mvc file.

So I manually copied the newer file from the package to the bin folder. Then I was up and running again.

小开

One way to fix it is by modifying the assembly redirect in the web.config file.

Modify the following:

<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

<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".

小开

Install-Package 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

小开

Uninstalling and re-installing the NuGet package worked for me.

  1. Remove any old reference from the project.

Execute this in the Package Manager Console:

  1. UnInstall-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
  2. Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
小开

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 proir to any package installs:

Install-Package Microsoft.AspNet.Mvc -Version 5.2.3

https://www.nuget.org/packages/microsoft.aspnet.mvc

小开

install this in your nuget package manager

Install-Package Microsoft.AspNet.WebApi.WebHost -Version 5.2.7

and paste

using System.Web.Http;

This should work


提交答案