我有一个较旧的代码库，它使用ASP.NET网站( ，而不是 ，一个ASP.NET Web应用程序)，并试图在Azure DevOps上为它构建管道。

当进程到达 aspnet_compiler.exe 时遇到一些困难之后，我创建了一个简单的测试解决方案，其中包含一个ASP.NET表单站点，它是从VS2019中的模板生成的。然后，我使用ASP.NET模板创建了一个管道，并运行它，最终以熟悉的失败告终。测试解决方案和实际解决方案在同一地点失败了，所以至少我已经指出了这个问题.不幸的是，我不知道怎么解决这个问题。

构建步骤的完整日志位于我的帖子底部，但这里是我被特别困住的地方：

Project "D:\a\9\s\Hello.sln" (1) is building "D:\a\9\s\WebSite1_1_.metaproj" (2) on node 1 (default targets).
Build:
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe -v /localhost_51752 -p WebSite1\ -u -f PrecompiledWeb\localhost_51752\ 
##[error]WebSite1\web.config(116,0): Error ASPCONFIG: The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located.
D:\a\9\s\WebSite1\web.config(116): error ASPCONFIG: The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located. [D:\a\9\s\WebSite1_1_.metaproj]

我应该注意，这似乎与 Microsoft.CodeDom.Providers.DotNetCompilerPlatform 程序集并没有具体的关系。在我的实际ASP.NET网站(不是我正在使用的这个小测试)中，如果站点的 web.config 包含以下内容，就会发生同样的" Error ASPCONFIG: ... * could not be located. “错误：

    <compilation debug="true" defaultLanguage="c#" targetFramework="4.8">
      <assemblies>
        <add assembly="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
      </assemblies>
    </compilation>

在这种情况下，它将抛出相同的错误，而是关于 Microsoft.Web.Infrastructure 。显然， aspnet_compiler.exe 找不到我的引用，但是我不知道缺少什么--是引用没有被复制到某个地方，还是过程没有在正确的地方查找它们，或者.？

下面是整个Azure DevOps管道构建日志：

##[section]Starting: Build solution
==============================================================================
Task         : Visual Studio build
Description  : Build with MSBuild and set the Visual Studio version property
Version      : 1.166.2
Author       : Microsoft Corporation
Help         : https://learn.microsoft.com/azure/devops/pipelines/tasks/build/visual-studio-build
==============================================================================
##[command]"D:\a\_tasks\VSBuild_71a9a2d3-a98a-4caa-96ab-affca411ecda\1.166.2\ps_modules\MSBuildHelpers\vswhere.exe" -version [16.0,17.0) -latest -format json
##[command]"D:\a\_tasks\VSBuild_71a9a2d3-a98a-4caa-96ab-affca411ecda\1.166.2\ps_modules\MSBuildHelpers\vswhere.exe" -version [16.0,17.0) -products Microsoft.VisualStudio.Product.BuildTools -latest -format json
##[command]"D:\a\_tasks\VSBuild_71a9a2d3-a98a-4caa-96ab-affca411ecda\1.166.2\ps_modules\MSBuildHelpers\vswhere.exe" -version [15.0,16.0) -latest -format json
##[command]"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\msbuild.exe" "D:\a\9\s\Hello.sln" /nologo /nr:false /dl:CentralLogger,"D:\a\_tasks\VSBuild_71a9a2d3-a98a-4caa-96ab-affca411ecda\1.166.2\ps_modules\MSBuildHelpers\Microsoft.TeamFoundation.DistributedTask.MSBuild.Logger.dll";"RootDetailId=f1e19740-d1c0-4435-a66d-d2b7ccec211f|SolutionDir=D:\a\9\s"*ForwardingLogger,"D:\a\_tasks\VSBuild_71a9a2d3-a98a-4caa-96ab-affca411ecda\1.166.2\ps_modules\MSBuildHelpers\Microsoft.TeamFoundation.DistributedTask.MSBuild.Logger.dll" /p:DeployOnBuild=true /p:WebPublishMethod=Package /p:PackageAsSingleFile=true /p:SkipInvalidConfigurations=true /p:PackageLocation="D:\a\9\a\\" /p:platform="any cpu" /p:configuration="release" /p:VisualStudioVersion="15.0" /p:_MSDeployUserAgent="VSTS_ab00089e-3c64-4607-ad03-57473b1db76f_build_3_0"
Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
Build started 8/28/2020 6:48:44 PM.
Project "D:\a\9\s\Hello.sln" on node 1 (default targets).
ValidateSolutionConfiguration:
  Building solution configuration "release|any cpu".
Project "D:\a\9\s\Hello.sln" (1) is building "D:\a\9\s\WebSite1_1_.metaproj" (2) on node 1 (default targets).
Build:
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe -v /localhost_51752 -p WebSite1\ -u -f PrecompiledWeb\localhost_51752\ 
##[error]WebSite1\web.config(116,0): Error ASPCONFIG: The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located.
D:\a\9\s\WebSite1\web.config(116): error ASPCONFIG: The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located. [D:\a\9\s\WebSite1_1_.metaproj]
Done Building Project "D:\a\9\s\WebSite1_1_.metaproj" (default targets) -- FAILED.
Done Building Project "D:\a\9\s\Hello.sln" (default targets) -- FAILED.
Build FAILED.
"D:\a\9\s\Hello.sln" (default target) (1) ->
"D:\a\9\s\WebSite1_1_.metaproj" (default target) (2) ->
(Build target) -> 
  D:\a\9\s\WebSite1\web.config(116): error ASPCONFIG: The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located. [D:\a\9\s\WebSite1_1_.metaproj]
    0 Warning(s)
    1 Error(s)
Time Elapsed 00:00:09.47
##[error]Process 'msbuild.exe' exited with code '1'.
##[section]Finishing: Build solution