Visual Studio 2017-无法加载文件或程序集'System.Runtime，Version = 4.1.0.0'或其依赖项之一 [英] Visual Studio 2017 - Could not load file or assembly 'System.Runtime, Version=4.1.0.0' or one of its dependencies

问题描述

我正在使用Visual Studio 2017，并尝试创建.Net Standard 1.5库并在.Net 4.6.2 nUnit测试项目中使用它。

I am using Visual Studio 2017 and am trying to create a .Net Standard 1.5 library and use it in a .Net 4.6.2 nUnit test project.

我遇到以下错误...

I am getting the following error...

无法加载文件或程序集'System.Runtime，版本= 4.1.0.0，
文化=中立，PublicKeyToken = b03f5f7f11d50a3a'或其
依赖项之一。系统找不到指定的文件。

Could not load file or assembly 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

我尝试了以下操作：

1. 参考Std库作为项目参考。错误：给我上次错误。


2. 为此创建NuGet pkg我的Std库并将其引用。错误：类型为System.String，需要System.String。这是因为System.Runtime最终被项目引用，并且具有所有标准类型的定义。


3. 参考NuGet pkg NetStandard.Library。错误：给我与＃相同的错误（类型为System.String，需要System.String）。注意：在执行此操作之前，我从项目中清除了所有NuGet软件包，然后仅添加了nUnit和NetStandard.Library软件包（已安装了45个其他软件包）。

1. Reference Std library as project reference. Error: gives me the previous error.
2. Create a NuGet pkg for my Std library and reference that. Error: The type is System.String, expecting System.String. This is because System.Runtime ended up getting referenced by the project and it has definitions for all the standard types.
3. Reference NuGet pkg NetStandard.Library. Error: give me the same error as # ("The type is System.String, expecting System.String"). NOTE: Before I did this, I cleared ALL NuGet packages from the project and then added just the nUnit and NetStandard.Library packages (which installed 45 other packages).

这是一个错误吗？有解决方法吗？谢谢您的帮助。

Is this a bug? Is there a work-around? Any help is appreciated.

推荐答案

我遇到了同样的问题，但没有找到建议的解决方案。
我对此问题的解决方案是：
检查App.config和packages.config以查看版本是否匹配。

I had the same problem and no suggested solutions that I found worked. My solution for this issue was: Check App.config and packages.config to see if the versions match.

最初是我的app.config包含：

Originally my app.config contained:

<dependentAssembly>
  <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
</dependentAssembly>

但是packages.config包含：

But the packages.config contained:

<package id="System.Runtime" version="4.3.0" targetFramework="net461" requireReinstallation="true" />

我修改了app.config条目以匹配newVersion的packages.config：

I modified the app.config entry to match packages.config for the newVersion:

<dependentAssembly>
  <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.3.0" />
</dependentAssembly>

更改后，问题已解决。

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