Does VS2010 use csc.exe / vbc.exe (directly or indirectly) to compile relevant projects?

Pretty much as the title suggests.

I can't find any proof that DevEnv.exe actually calls these开发者_如何学Python at any point.

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Also, here's an interesting link: http://blogs.msdn.com/ed_maurer/archive/2008/06/11/a-tale-of-two-compilers.aspx

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Visual Studio uses an in-process compiler for C# compilation. I would guess the same is true for VB.NET.

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Check the targets files - you will see that the compilers are referenced in the relevant targets file.

These files are what MSBuild uses to determine what and how to build a project (when using F5 or Build Project).