How to load a picturebox from different classes?

[codeguy03]

Please forgive my lack of knowledge Im new to C#. I usually do VB.

So if I want to load that picturebox from a thumbnail click event that is in another class what is the easiest way this can be done?

I cant call a new instance of the mainform either. (Like Mainform m = new mainform() ; m.picturebox1 = Image.fromfile(path))

That doesnt work either.