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在 Visual Studio 2012 中，我做了一个 MsBuild 内联任务，直到我取消注释一行代码。取消注释时，它会失败并显示以下消息：

C:\Build\MyScript.targets(49,5): error MSB4018: The "MyCustomGetPath" task failed unexpectedly.
C:\Build\MyScript.targets(49,5): error MSB4018: System.IO.FileNotFoundException: Could not load file or assembly 'NuGet, Version=2.7.40906.75, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
C:\Build\MyScript.targets(49,5): error MSB4018: File name: 'NuGet, Version=2.7.40906.75, Culture=neutral, PublicKeyToken=null'
C:\Build\MyScript.targets(49,5): error MSB4018:    at InlineCode.GetNuGetRepositoryPath.Execute()
C:\Build\MyScript.targets(49,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
C:\Build\MyScript.targets(49,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext()
C:\Build\MyScript.targets(49,5): error MSB4018: 
C:\Build\MyScript.targets(49,5): error MSB4018: === Pre-bind state information ===
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: User = Biz\baria2
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: DisplayName = NuGet, Version=2.7.40906.75, Culture=neutral, PublicKeyToken=null
C:\Build\MyScript.targets(49,5): error MSB4018:  (Fully-specified)
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Appbase = file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Initial PrivatePath = NULL
C:\Build\MyScript.targets(49,5): error MSB4018: Calling assembly : (Unknown).
C:\Build\MyScript.targets(49,5): error MSB4018: ===
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: This bind starts in default load context.
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Using application configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe.Config
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Using host configuration file: 
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/NuGet.DLL.
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/NuGet/NuGet.DLL.
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/NuGet.EXE.
C:\Build\MyScript.targets(49,5): error MSB4018: LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/NuGet/NuGet.EXE.
C:\Build\MyScript.targets(49,5): error MSB4018: 
Done Building Project "C:\Build\MyScript.targets" (default targets) -- FAILED.

我正在执行的命令是：

C:\Build\>msbuild MyScript.targets

这是内联任务：

<UsingTask TaskName="MyCustomGetPath" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
  <ParameterGroup>
    <config ParameterType="System.String" Required="true" />
    <repositoryPath ParameterType="System.String" Output="true" />
  </ParameterGroup>
  <Task>
    <Reference Include="$(NuGetExePath)" />
    <Using Namespace="NuGet" />
    <Using Namespace="System.IO" />
    <Code Type="Fragment" Language="cs">
      <![CDATA[
          ISettings settings = null;
          string directoryName = Path.GetDirectoryName(Path.GetFullPath(config));
          string fileName = null;
          if (File.Exists(config))
          {
              fileName = Path.GetFileName(config);
          }
          
          //var temp = new NullLogger();
          //MessageLevel msg = MessageLevel.Warning;
          //PhysicalFileSystem physicalFileSystem = new PhysicalFileSystem(directoryName);

          repositoryPath = directoryName;
          ]]>
    </Code>
  </Task>
</UsingTask>

是的，此代码引用 NuGet.exe（在本例中为 2.7 版）。上面有三行注释；取消注释其中任何一个都会导致错误。总的来说，我怀疑这与融合有关。这是有道理的，但是我有什么办法来解决这个问题呢？

更新

这个帖子似乎是同样的问题。

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