What's an easy way to access prebuild macros such as $(SolutionDir) and $(DevEnvDir) from code in C#?

Question

Right now I'm thinking write the paths to a file in the pre-build event and then read from that file in the code, but I'm wondering if there's an easier more elegant way.

edit: This is sort of a follow up to Help with one step build all projects + installer (.NET + WiX) since I didn't really get an answer to that, seeing if I can get an answer to a simpler question.

Answer 1

Here's a dirty hack: dump them to a file.

1. Add an action to the pre-build events to output your solution's path to a file:

   echo $(SolutionDir) > SolutionDirFile.txt

2. Read the file SolutionDirFile.txt in your C# code.

Answer 2

This is just a guess, but I think one of the ways you could get this information into the file at compile-time is by using something like PostSharp. Basically, get some sort of preprocessor to get the data for you, and then simply embed it in your assembly.