You can hide files in Windows following this method:
- Select the files or folders you want to hide
- Right-click and choose Properties
- Click the General tab
- Click the checkbox next to Hidden in the Attributes section
- Click Apply
Even with a hidden data file, the executable you created will execute and find your files.
One thing to keep in mind is that hidden files are easily discovered using the option Show Hidden Files
If this option is enabled, anyone on your computer can modify the content of your repertory.