I need some advice on how to do something.

I need to tile a form with several pictures which can be chosen.
The pictures will be loaded from a directory.

Can someone explain (or even help me with a little code) how to do this.
I'm fine to do this myself in the IDE but not at runtime.

Do I load the pictures into buttons or pictureboxes?
And how do I then add code that tells me which picture was chosen?