如果你使用Nuget来管理依赖项，我还有另一种方法。我发现有时候VS和Nuget不匹配，Nuget无法识别你的项目不同步。的包。config会说一件事，但在References - Properties中显示的路径将指示其他内容。

如果你愿意更新你的依赖项，请执行以下操作:

From Solution Explorer, right click the Project and click 'Manage Nuget Packages' Select 'Installed packages' tab in left pane Record your installed packages You may want to copy your packages.config to your desktop first if you have a lot, so you can cross check it with Google to see what Nuget pkgs are installed Uninstall your packages. Its OK, we're going to add them right back. Immediately install the packages you need. What Nuget will do is not only get you the latest version, but will alter your references, and also add the binding redirects for you. Do this for all of your projects. At the solution level, do a Clean and Rebuild.

您可能希望从较低的项目开始，然后逐步到较高级别的项目，并在进行过程中重新构建每个项目。

如果你不想更新你的依赖项，那么你可以使用包管理器控制台，并使用语法update - package -ProjectName [yourProjectName] [packageName] -Version [versionNumber]

这实际上取决于外部组件。当你在. net应用程序中引用一个外部组件时，它会生成一个GUID来标识该组件。当某个项目引用的外部组件与另一个程序集中的另一个此类组件名称相同但版本不同时，会发生此错误。

当您使用“浏览”查找引用并添加错误版本的程序集时，有时会发生这种情况，或者您的代码存储库中组件的版本与您在本地机器中安装的版本不同。

尝试找出哪些项目有这些冲突，从引用列表中删除组件，然后再次添加它们，确保指向相同的文件。

这也发生在我身上。一个dll被引用了两次:一次直接(在引用中)，一次间接(被另一个引用的项目引用)。 我删除了直接参考，清洗和重建解决方案。固定的问题。

打开“解决方案资源管理器”。 点击“显示所有文件” 扩大“引用” 您将看到一个(或多个)引用与其他引用的图标略有不同。通常情况下，它会有一个黄色的方框，建议你记下它。把它拿掉。 重新添加引用并编译代码。 这是所有。

在我的例子中，MySQL引用有一个问题。不管怎样，我可以在所有可用的引用列表下列出它的三个版本;适用于。net 2.0、。net 4.0和。net 4.5。我遵循了上面的方法1到6，它对我很有效。

I just spent sometime debugging the same issue. Note, that issue might not be between different projects, but actually between several references in one project that depend on different versions of the same dll/assembly. In my case, issue was reference FastMember.dll versions mismatch that comes from two different NuGet packages in a single project. When I was given a project, it would not compile because NuGet packages were missing and VS refused to restore missing packages. Through the NuGet menu, I manually update all the NuGets to the latest version, that is when the warning appeared.

在Visual Studio工具中>选项>构建和运行> msbuild项目构建输出详细信息:(设置为)诊断。在“输出”窗口中查找有冲突的行。下面是我得到的输出部分:

1>  There was a conflict between "FastMember, Version=1.5.0.0, Culture=neutral, PublicKeyToken=null" and "FastMember, Version=1.3.0.0, Culture=neutral, PublicKeyToken=null". (TaskId:19)
1>      "FastMember, Version=1.5.0.0, Culture=neutral, PublicKeyToken=null" was chosen because it was primary and "FastMember, Version=1.3.0.0, Culture=neutral, PublicKeyToken=null" was not. (TaskId:19)
1>      References which depend on "FastMember, Version=1.5.0.0, Culture=neutral, PublicKeyToken=null" [C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\FastMember.1.5.0\lib\net461\FastMember.dll]. (TaskId:19)
1>          C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\FastMember.1.5.0\lib\net461\FastMember.dll (TaskId:19)
1>            Project file item includes which caused reference "C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\FastMember.1.5.0\lib\net461\FastMember.dll". (TaskId:19)
1>              FastMember, Version=1.5.0.0, Culture=neutral, processorArchitecture=MSIL (TaskId:19)
1>      References which depend on "FastMember, Version=1.3.0.0, Culture=neutral, PublicKeyToken=null" []. (TaskId:19)
1>          C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\ClosedXML.0.94.2\lib\net46\ClosedXML.dll (TaskId:19)
1>            Project file item includes which caused reference "C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\ClosedXML.0.94.2\lib\net46\ClosedXML.dll". (TaskId:19)
1>              ClosedXML, Version=0.94.2.0, Culture=neutral, processorArchitecture=MSIL (TaskId:19)

注意，该项目文件项包括导致引用“C:\Users\ksd3jvp\Source\Temp\AITool\Misra\AMSAITool\packages\ClosedXML.0.94.2\lib\net46\ClosedXML.dll”

ClosedXML.dll来自ClosedXML NuGet，它依赖于FastMember.dll 1.3.0.0。在它之上，项目中还有FastMember Nuget，它有FastMember.dll 1.5.0.0。不匹配!

我已经卸载了ClosedXML和FastMember NuGets，因为我有绑定重定向，并安装了ClosedXML的最新版本，解决了这个问题!

我也有同样的问题，我通过在web.config中更改以下内容来解决。

这发生在我身上，因为我正在使用Newtonsoft运行应用程序。Json 4.0

来自:

<dependentAssembly>
  <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>

To:

<dependentAssembly>
  <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="4.5.0.0" />
</dependentAssembly>