What should be the code to save picturebox data if they are places. with images meaningful busy or not?

Question

C++ / C#

Good day, I do not know how to implement the code. I have a group of picturebox which are places they contain images.
I tried to save via xml file, but did not understand how to do it. The xml file stores page layout data such as rows and places, and due to this the picturebox is aligned.