Can I draw to a PictBox outside of a paint event?

[Swisskid]

Guys,

I finally realized pros/cons of CreateGraphics Method vs. Paint event (with some help from members here) for a Picture box.

I want program code that is doing calculations to to update several different PictureBoxes but it seems weird to have calculation code have to be inside a Paint event to paint the "data"...

Structurally I am asking if I can have a program that calculates something and then updates multiple different Pictureboxes (mostly just drawing points or showing displaying data in a plot format)...

Is there a method to call DrawRectangle() function from code running OUTSIDE of the PaintEvent and update a drawing in a specific PictureBox by passing the right parameters?

Ideally I would have the main program running its calcs and when it gets a result to be displayed I can draw to pictBox a, b, c and so forth form the main program event (not from a Paint Event for each Picture Box).

Right now the program runs the specific code within the Paint event itself...this becomes problematic when I do different calculations and want to print them to different PictureBoxes.
Seems like I need to split up the calculations so that each calculation occurs in a different PictureBox Paint event...

Appreciate any hints as to how to do this, assuming it is possible.