问题描述
我正在将 Google Cloud PubSub 集成到我的 c# 项目中，我使用 NuGet 安装 1.0.0-beta11，完全没有错误.当我运行我的项目并到达使用 pubsub 的代码时，我收到以下错误:
I am working on integrating Google Cloud PubSub into my c# project, I used NuGet to install 1.0.0-beta11, no errors at all. When I run my project and when it reaches the code that uses pubsub, I get the following error:
An unhandled exception of type 'System.IO.FileLoadException' occurred in
Google.Api.Gax.dll
Additional information: Could not load file or assembly 'Google.Apis.Auth, Version=1.21.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
NuGet 确实安装了所有依赖项，包括 Google.Apis.Auth.dll，但它是 1.27.1.我已经尝试了我能想到的一切，包括获取该 dll 的 1.21.0 并使用它，但没有成功.我已经能够运行 .net 示例很好，没有错误.
NuGet did install all the dependencies including Google.Apis.Auth.dll, but it's 1.27.1. I have tried everything I could think of, including grabbing 1.21.0 of that dll and using that, but no success. I have been able to run the .net sample just fine with no error.
有什么想法吗?如果您需要更多信息，请告诉我
Any thoughts? Let me know if you need more info
推荐答案
好的，我找到了对 Google.Apis.Auth 1.21.0 的引用 - 它在 Grpc.Auth NuGet 包.
Okay, I've found the reference to Google.Apis.Auth 1.21.0 - it's in the Grpc.Auth NuGet package.
如果你只是添加对 Grpc.Auth DLL 的引用，你会遇到这种失败 - 但如果你通过 NuGet 管理 所有 依赖项，我'希望它没问题 - 它应该为您添加程序集绑定重定向.
If you just add a reference to the Grpc.Auth DLL, you'll get this kind of failure - but if you manage all the dependencies via NuGet, I'd expect it to be okay - it should add assembly binding redirects for you.
在不知道您的确切设置的情况下，要说更多是很棘手的 - 可能是您的 library 需要程序集绑定重定向，但 应用程序 可以控制它们...特别是，如果您的应用程序仅引用库 DLL，则会导致问题.
Without knowing your exact setup, it's quite tricky to say more than that - it could be that your library needs assembly binding redirects, but the application is in control of them... and in particular, if your application only has a reference to the library DLL, that would cause the problem.
作为一种解决方法，您可以手动添加程序集绑定重定向(执行此操作的确切方法取决于应用程序类型)或仅添加对 Google.Cloud.PubSub.V1 的引用在应用程序和库中，此时 NuGet 将为您完成所有依赖项处理.
As a workaround, you could either manually add the assembly binding redirects (the exact way of doing that will depend on the application type) or just add a reference to Google.Cloud.PubSub.V1 in the application as well as the library, at which point NuGet will do all the dependency handling for you.
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