Delphi-like directory and file form windows in C#

Hello, All

I'm trying to create a C# form in VS2017-7 to conduct Fourier transforms on data files in several different directories and folders. In my Delphi progs I had windows on my form displaying directories and another of the files in those directories allowing me to move from directory to directory with just a mouse click.

I can't find that in C#. I went thru the Forms toolbox and spent hours searching the web. I even tried the MS community and Newtonsoft.
All the examples I found (directoryEntry, direcctorySearcher, folderBrowserDialog} all seem to be text based with specific directory paths embedded in the code.

Any help here will be greatly appreciated.

Thank you, Bill Kilgore (billkilgore@yahoo.com)