Question

I have a startup project and I want to do a process.Start(); on a second project in the same solution. But using Path.Combine(Application.StartupPath, "SecondAssemblyName.exe"); as FileName doesn’t work. What does?

Answer 1

By default, each project builds to its own directory, so you would have something like:

\MySolution
    \ProjectOne
        \bin
            ProjectOne.exe
    \ProjectTwo
        \bin
            ProjectTwo.exe

So your command to execute the other .exe does not work because they are built to separate folders.

You can fix this by doing one of a few things. You can add a post-build step to copy one .exe to the others \bin folder. Or you could change the build output paths of the projects to build to the same location.