对于我来说，我的构建定义被配置为构建我的.sln文件而不是我的.proj文件.我记得配置它来构建MSBuild项目，但是它似乎已经恢复为解决方案了.

In my case, my build definition was configured to build my .sln file instead of my .proj file. I remember configuring it to build the MSBuild project, but somehow it seems to have reverted to the Solution.

无论如何，我找到了解决该问题的两种方法:

Anyway, I found two solutions to the problem:

1. 确保构建.proj文件(工具版本确实设置为12.0).
2. 明确设置

1. Make sure to build the .proj file (where the tools version is indeed set to 12.0).
2. Explicitly set the VCTargetsPath.