问题
I am setting up a new solution in which I want to use the latest Autofac (3.4) and PostSharp 3.1.42. After referencing the NuGet packages I get the following error and I can't figure out what is going on. I never selected Autofac 3.3.0 package.
packages.config:
<package id="Autofac" version="3.4.0" targetFramework="net451" />
<package id="Autofac.Extras.Multitenant" version="3.1.1" targetFramework="net451" />
<package id="Autofac.Mvc5" version="3.3.0" targetFramework="net451" />
<package id="PostSharp" version="3.1.42" targetFramework="net451" />
MSBuild log:
Error 3 Unhandled exception (3.1.43.0, 32 bit, CLR 4.5, Release): PostSharp.Sdk.CodeModel.AssemblyLoadException: Cannot find assembly 'autofac, version=3.3.0.0, culture=neutral, publickeytoken=17863af14b0044da'. [Version mismatch]
============ PostSharp Assembly Loading Log ===================
LOG: Finding the assembly with binding identity 'autofac, version=3.3.0.0, culture=neutral, publickeytoken=17863af14b0044da'.
LOG: Found file 'D:\web\Project\packages\Autofac.3.4.0\lib\net40\Autofac.dll' with identity 'autofac, version=3.4.0.0, culture=neutral, publickeytoken=17863af14b0044da, processorarchitecture=msil'.
LOG: Reference mismatch for 'D:\web\Project\packages\Autofac.3.4.0\lib\net40\Autofac.dll' [VersionMismatch].
LOG: Probing location 'C:\ProgramData\PostSharp\3.1.43\bin.Release\Autofac.exe' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\ProgramData\PostSharp\3.1.43\bin.Release\Autofac.dll' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\ProgramData\PostSharp\3.1.43\bin.Release\Autofac.winmd' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'D:\web\Project\src\Framework\BLL\bin\Autofac.exe' because this directory was explicitly added to the search path [File Not Found].
LOG: Found file 'D:\web\Project\src\Framework\BLL\bin\Autofac.dll' with identity 'autofac, version=3.4.0.0, culture=neutral, publickeytoken=17863af14b0044da, processorarchitecture=msil'. LOG: Reference mismatch for 'D:\web\Project\src\Framework\BLL\bin\Autofac.dll' [VersionMismatch].
LOG: Probing location 'D:\web\Project\src\Framework\BLL\bin\Autofac.winmd' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'D:\web\Project\src\Framework\BLL\obj\O\Autofac.exe' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'D:\web\Project\src\Framework\BLL\obj\O\Autofac.dll' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'D:\web\Project\src\Framework\BLL\obj\O\Autofac.winmd' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Autofac.exe' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Autofac.dll' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Autofac.winmd' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Facades\Autofac.exe' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Facades\Autofac.dll' because this directory was explicitly added to the search path [File Not Found].
LOG: Probing location 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Facades\Autofac.winmd' because this directory was explicitly added to the search path [File Not Found].
LOG: Looking in GAC for Autofac, Version=3.3.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da, processorArchitecture=x86.
LOG: Looking in GAC for Autofac, Version=3.3.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da, processorArchitecture=msil.
LOG: Looking in GAC for Autofac, Version=3.3.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da.
LOG: The assembly 'autofac, version=3.3.0.0, culture=neutral, publickeytoken=17863af14b0044da' was not found.
===============================================================
at PostSharp.Sdk.CodeModel.Domain.GetAssembly(IAssemblyName assemblyName, BindingOptions bindingOptions)
at PostSharp.Sdk.CodeModel.AssemblyRefDeclaration.^5YpB0scd(BindingOptions
_0)
at
PostSharp.Sdk.Extensibility.Tasks.MulticastAttributeTask.^SgrhoGlQ(AssemblyRefDeclaration
_0)
at PostSharp.Sdk.Extensibility.Tasks.MulticastAttributeTask.^+GwnKh4ZYHu3() at PostSharp.Sdk.Extensibility.Tasks.MulticastAttributeTask.Execute() at PostSharp.Sdk.Extensibility.Project.ExecutePhase(String phase) at PostSharp.Sdk.Extensibility.Project.Execute() at PostSharp.Hosting.PostSharpObject.ExecuteProjects() at PostSharp.Hosting.PostSharpObject.InvokeProject(ProjectInvocation projectInvocation). D:\web\Project\src\Framework\BLL\BLL.csproj BLL
Does anybody know where this is coming from and how I can fix this? In the past I created some projects with Autofac 3.3.0. Could this be some cache? PostSharp and Autofac are not in my GAC.
回答1:
Okay, so I already found the answer. Somehow PostSharp is looking for the wrong assembly in the wrong location. Just add this to your csproj file to fix it:
<PostSharpHostConfigurationFile>$(SolutionDir)path\to\your\web.config</PostSharpHostConfigurationFile>
来源：https://stackoverflow.com/questions/23968550/postsharp-assemblyloadexception-autofac