Using $(WebProjectOutputDir) in the *.csproj file's PostBuildEvent

A colleague of mine wanted to add a PostBuildEvent in their *.csproj file which would run a custom executable to create generated java script files.

The change (see BEFORE below) worked locally as the path they wanted the generated was $(ProjectDir) which mapped to the .\Sources directory on the build machine and their locally directory within their IDE. The issue was, we needed the generated files to be under .\Binaries on the build machine which didn't exist on their machine. More specifically, we needed this generated file created under $(OutDir)_PublishedWebsites\$(MSBuildProjectName) on the build machine which translates to .\Binaries\_PublishedWebsites\$(MSBuildProjectName).

What we ended up doing was, instead of using the $(Outdir) property, we used the $(WebProjectOutputDir) which was set in the $(MSBuildExtensionsPath)\Microsoft\VisualStudio\v9.0\WebApplications\Microsoft.WebApplication.targets file. Using this value allows the output directories to be correctly set on both the build machine (where we want to use .\Binaries) and $(ProjectDir) where we want to use the locally structure.

BEFORE:
"$(TargetDir)JavascriptFromMvcRoutes.exe" "$(TargetDir)$(TargetFileName)" "$(ProjectDir)js\Generated.js"

AFTER:
"$(TargetDir)JavascriptFromMvcRoutes.exe" "$(TargetDir)$(TargetFileName)" "$(WebProjectOutputDir)js\Generated.js"