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c# – 无法加载文件或程序集’System.Net.Http.Formatting-Cosmo’

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这个错误刚刚开始发生.使用Visual Studio 2017,System.Net.Http.Formatting问题已经持续了好几年.

我只在网页上看到此消息：

Could not load file or assembly ‘System.Net.Http.Formatting-Cosmo’ or one of its dependencies. The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

跟踪追溯：

     === Pre-bind state information ===
 LOG: DisplayName = System.Net.Http.Formatting-Cosmo
  (Partial)
 WRN: Partial binding information was supplied for an assembly:
 WRN: Assembly Name: System.Net.Http.Formatting-Cosmo | Domain ID: 2
 WRN: A partial bind occurs when only part of the assembly display name is provided.
 WRN: This might result in the binder loading an incorrect assembly.
 WRN: It is recommended to provide a fully specified textual identity for the assembly,
 WRN: that consists of the simple name, version, culture, and public key token.
 WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
 LOG: Appbase = file:///C:/Users/George/OneDrive/SignupList/SignupList/
 LOG: Initial PrivatePath = C:\Users\George\OneDrive\SignupList\SignupList\bin
 Calling assembly : (Unknown).
 ===
 LOG: This bind starts in default load context.
 LOG: Using application configuration file: C:\Users\George\OneDrive\SignupList\SignupList\web.config
 LOG: Using host configuration file: C:\Users\George\OneDrive\IISExpress\config\aspnet.config
 LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
 LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
 LOG: Attempting download of new URL file:///C:/Users/George/AppData/Local/Temp/Temporary ASP.NET Files/vs/6cc2628d/51b3c1a6/System.Net.Http.Formatting-Cosmo.DLL.
 LOG: Attempting download of new URL file:///C:/Users/George/AppData/Local/Temp/Temporary ASP.NET Files/vs/6cc2628d/51b3c1a6/System.Net.Http.Formatting-Cosmo/System.Net.Http.Formatting-Cosmo.DLL.
 LOG: Attempting download of new URL file:///C:/Users/George/OneDrive/SignupList/SignupList/bin/System.Net.Http.Formatting-Cosmo.DLL.
 WRN: Comparing the assembly name resulted in the mismatch: NAME
 ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

似乎停止尝试在配置中找到具有正确DLL版本的System.Net.Http.Formatting.

  <dependentAssembly>
    <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
  </dependentAssembly>

我使用ASP.NET而不是MVC,我不知道为什么需要System.Net.Http.Formatting. Cosmo是我的电脑名称.我希望-Cosmo不是问题,我不明白为什么会这样.

我在Stack Overflow – Could not load file or assembly ‘System.Net.Http.Formatting’ or one of its dependencies. The system cannot find the path specified的前4年帖子中做了所有提到的事情
没有解决它.我找到了其他帖子并使用了Microsoft.AspNet.WebApi.Core V 5.2.4,它将System.Net.Http.Formatting V 5.2.3.0.

System.Net.Http.Formatting Reference上的Local Copy属性设置为True.她重新获得的所有包裹.该项目已重新初始化.我已经尝试了所有可以找到的建议.

没有Microsoft.AspNet.WebApi.Core,如果我编译我得到编译错误抱怨System.Net.Http.Formatting缺失.添加Core返回,错误消失,编译正常.由于依赖性,我还必须删除并重新添加Microsoft.AspNet.WebApi.WebHost和Microsoft.AspNet.WebApi.Core.运行它时的网页会给出错误以及项目中每个ASPX文件的顶行.

我也有Newtonsoft.Json,我见过这与此有关.

      <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" culture="neutral" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" culture="neutral" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" culture="neutral" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" culture="neutral" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" culture="neutral" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Telerik.Web.UI" publicKeyToken="121fae78165ba3d4" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-2014.3.1209.45" newVersion="2014.3.1209.45" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Google.Apis" publicKeyToken="4b01fa6e34db77ab" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.25.0.0" newVersion="1.25.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Google.Apis.Core" publicKeyToken="4b01fa6e34db77ab" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.25.0.0" newVersion="1.25.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

程序集正在寻找System.Net.Http.Formatting-Cosmo并尝试下载它. System.Net.Http.Formatting正在bin中,我甚至添加了System.Net.Http.Formatting-Cosmo以防万一.版本匹配.为什么找不到bin DLL？ -Cosmo有问题吗？

令人费解.

乔治

解决方法:

它现在已修复,但我不确定它是如何修复的,因为我尝试了很多不同的东西,包括更新Visual Studio和摆脱旧的Visual Studios,它没有解决问题,但确实改变了一点.

我注意到System.Net.Http.Formatting.dll的版本为5.2.60201.0.环顾四周,我看到Microsoft.AspNet.WebApi.Client也可能参与其中.

使用NuGet Package Manager,我删除了Microsoft.AspNet.WebApi.WebHost,Microsoft.AspNet.WebApi.Core和Microsoft.AspNet.WebApi.Client.然后我重新添加了所有3个版本的最新版本5.2.4.客户端包位于5.2.2.

现在,Web.config中System.Net.Http.Formatting的dependentAssembly有newVersion =“5.2.4.0”. DLL上的版本是5.2.60201.0,所以我期待它看到问题,但它的工作原理.寻找System.Net.Http.Formatting版本5.2.4.0似乎找到5.2.60201.0就好了,而5.2.3.0则不行.

正如我认为更好地理解它,它工作得很好.确实是一次学习经历.

最后我相信,

> Microsoft.AspNet.WebApi.WebHost
> Microsoft.AspNet.WebApi.Client
> Microsoft.AspNet.WebApi.Core

应该都是NuGet Manager中依赖项中确认的相同版本.

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