C# 无法以编程方式使用MSBuild生成项目

我正在尝试以编程方式（使用名称空间Microsoft.Build.Evaluation）将Visual Studio.csproj与MSBuild打包。 我可以用如下命令正确打包此项目

    MSBuild "C:\Users\Documents\Visual Studio 2010\Projects\TestMvc\TestMvc\TestMvc.csproj" /T:Package

但当我使用以下代码时（我实现了自己的记录器，但在这里并不重要）：

从API调用时，我得到以下日志：

Target "CoreCompile: (TargetId:37)" in file "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.CSharp.targets" from project "D:\Users\Documents\Visual Studio 2010\Projects\MvcTest2\MvcTest3\MvcTest3.csproj" (target "Compile" depends on it):
Building target "CoreCompile" completely.
Output file "obj\Debug\MvcTest3.dll" does not exist.
Using "Csc" task from assembly "Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
Task "Csc" (TaskId:20)
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\Csc.exe .....
  Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1 (TaskId:20)
  Copyright (C) Microsoft Corporation. All rights reserved. (TaskId:20)
   (TaskId:20)
Done executing task "Csc". (TaskId:20)

Target "CoreCompile" in file "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.CSharp.targets":
Building target "CoreCompile" completely.
Output file "obj\Debug\MvcTest3.dll" does not exist.
Using "Csc" task from assembly "Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
Task "Csc"
Done executing task "Csc".

---

因此，在这两种情况下都会启动Csc任务，但是，当通过API启动时，它不会生成任何输出文件（我在文件监视器中也检查了这一点，没有生成任何文件）。

每种情况下的工作目录是什么？obj\Debug\etc。。。是相对路径而不是绝对路径。@Murph，相同的目录。为了方便起见，我刚刚删除了这两种情况下的长路径。

Target "CoreCompile" in file "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.CSharp.targets":
Building target "CoreCompile" completely.
Output file "obj\Debug\MvcTest3.dll" does not exist.
Using "Csc" task from assembly "Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
Task "Csc"
Done executing task "Csc".