对我来说，我又加了一块鸡块，问题就解决了

删除name="System.Net. "的dependentAssembly。Http”来自web。Config对我也有用。我从网上评论了这部分。配置，它为我工作。 如果以上所有解决方案都不适用，请尝试如下所示的注释或删除。

<!--<dependentAssembly>
        <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
        <bindingRedirect oldVersion="0.0.0.0-4.1.1.2" newVersion="4.0.0.0"/>
      </dependentAssembly>-->

请遵循以下步骤:

Update Visual Studio to to latest version (it matters) Remove all binding redirects from web.config Add this to the .csproj file: <PropertyGroup> <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects> <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType> </PropertyGroup> Build the project In the bin folder there should be a (WebAppName).dll.config file It should have redirects in it, copy these to the web.config Remove the above snipped from the .csproj file

它应该会起作用。

4.6.1-2在VS2017中，用户可能会遇到他们的System.Net.Http版本被VS2017或Msbuild 15想要使用的版本替换。

我们在这里删除了这个版本:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\System.Net.Http.dll

在这里:

C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\System.Net.Http.dll

然后用我们通过NuGet引用的版本构建项目。

你可以通过将项目升级到. net Framework 4.7.2来解决这个问题。这个问题由微软的Alex giondea回答。请给他投票，因为他真的值得!

This is documented as a known issue in .NET Framework 4.7.1. As a workaround you can add these targets to your project. They will remove the DesignFacadesToFilter from the list of references passed to SGEN (and add them back once SGEN is done) <Target Name="RemoveDesignTimeFacadesBeforeSGen" BeforeTargets="GenerateSerializationAssemblies"> <ItemGroup> <DesignFacadesToFilter Include="System.IO.Compression.ZipFile" /> <_FilterOutFromReferencePath Include="@(_DesignTimeFacadeAssemblies_Names->'%(OriginalIdentity)')" Condition="'@(DesignFacadesToFilter)' == '@(_DesignTimeFacadeAssemblies_Names)' and '%(Identity)' != ''" /> <ReferencePath Remove="@(_FilterOutFromReferencePath)" /> </ItemGroup> <Message Importance="normal" Text="Removing DesignTimeFacades from ReferencePath before running SGen." /> </Target> <Target Name="ReAddDesignTimeFacadesBeforeSGen" AfterTargets="GenerateSerializationAssemblies"> <ItemGroup> <ReferencePath Include="@(_FilterOutFromReferencePath)" /> </ItemGroup> <Message Importance="normal" Text="Adding back DesignTimeFacades from ReferencePath now that SGen has ran." /> </Target> Another option (machine wide) is to add the following binding redirect to sgen.exe.config: <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.IO.Compression.ZipFile" publicKeyToken="b77a5c561934e089" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.0.0.0" /> </dependentAssembly> </assemblyBinding> </runtime> This will only work on machines with .NET Framework 4.7.1. installed. Once .NET Framework 4.7.2 is installed on that machine, this workaround should be removed.

如果您的解决方案中有多个项目，那么右键单击Visual Studio中的解决方案图标并选择“管理解决方案的NuGet包”，然后单击第四个选项卡“合并”，将所有项目合并到相同版本的dll中。这将为您提供一个要合并的引用程序集列表。单击列表中的每个项目，然后单击右侧选项卡中的install。