title: Pre- Post- Build Event Variables in Visual Studio are Empty
body: <p>Have a .NET Core app that I'm trying to use $(ProjectDir) with and when I attempt to pass in that macro, I get an empty value. I tried what was suggested in <a href="https://stackoverflow.com/questions/26748846/visual-studio-2013-post-build-event-macros-are-empty">Issue 26748846</a>, but that didn't seem to solve my issue.</p>