How do I find a file that may not be fully-qualified by using the environment path?

Question

I have an executable name, like cmd.exe and need to resolve its fully-qualified path. I know the exe appears in one of the directories listed in the PATH environment variable. Is there a way to resolve the full path without parsing and testing each directory in the PATH variable? Basically I don't want to do this:

foreach (string entry in Environment.GetEnvironmentVariable("PATH").Split(';'))
    ...

There has to be a better way, right?

Answer 1

This seems like a pretty good way of doing it already -- as far as I know, searching through the directories in the PATH environment variable is what Windows does anyway when it's trying to resolve a path.