我就有这个问题。这是因为我有许多项目指向相同的组装，但从不同的版本。我解决它选择相同版本的所有项目在我的解决方案。

I recently hit this problem. In my case, I have NuGet packages on different assemblies. What I had was different versions of the same NuGet packages associated with my own assemblies. My solution was to use the NuGet package manager upon the Solution, as opposed to the individual projects. This enables a "consolidation" option, where you can upgrade your NuGet packages across as many projects as you want - so they all reference the same version of the assembly. When I did the consolidations, the build failure disappeared.

帮助我的是，我进入包管理器解决方案，查看导致问题的安装包。我看到有几个项目引用了相同的包，但是版本不同。我根据自己的需要把它们排列起来，这很有效。

删除DLL(错误发生的地方)并重新构建解决方案解决了我的问题。谢谢

这是在更改引用的.dll的版本时引起的。您需要删除目标构建文件夹中的所有项或.dll。

您需要使用密钥对程序集进行签名。进入选项卡签名下的项目属性: