Set Directory VB .net 2022

[Darby]

I need to be sure that a project is set to the correct drive and directory before a sub program continues to run.

I've used GetCurrentDirectory() to see if I am already there and then SetCurrentDirectory() to change it if not.

If(Directory.GetCurrentDirectory() <> "J:" Then
Directory.SetCurrentDirectory("J:")
End if

That Didn't work, I also tried Just

Directory.SetCurrentDirectory(J:")

to just set the directory in case it wasn't already set.
Also didn't work.

I've been programming for over 50 years, at least the past 10-12 in Visual Basic, one version or another, and I cannot remember how to do this (79 years old, the mind is not as sharp). No matter where I look, I cannot find the answer. PLEASE HELP!!!!