[Question] Get folder structure and filenames inside those folders at Runtime (Hololens)

Hello there,
I'm developing a software to show animated 3d machine models on Hololens. Each machine's data is stored in the following way:

• Resources
  • Main Folder
    • Machine 1
      • Machine audios
      • Machine models
      • etc...
    • Machine 2
      • etc...
    • ...
    • Machine N

Right now I have a txt on Main Folder root that contains each machine's name, which I pass to the menu item to select the one I want to visualize. I want to ease the process of adding new machines by having the app read the names of the folders on Main Folder and create a button on the menu for each of them, without the need of a txt file.

Also, I'd like to get the names of the files inside each machine subfolder to check if the data is complete.

I've been looking around and I haven't found any solutions. I'd appreciatte if someone would point me in the right way.