New information:
This question has been re-asked here and has been correctly answered by Noah Richards with a solution that works in VS 2010.
At work we have a C# solution with over 80 projects. Is it possible in VS 2010 to automatically stop compilation as soon as an error is encountered rather than the default behaviour which is to continue as far as possible and display a list of errors in the error window?
I'm happy for it to stop either as soon as an error is encountered (file-level) or as soon as a project fails to build (project-level).
I'd also note that in VS 2008 we used macros similar to some of the answers below but they don't work in VS 2010 (at least I couldn't get them to as the environment events don't seem to fire in VS 2010).
Also Somewhat Related:
How to automatically stop Visual C++ build at first compile error?