I have a "public static" class called "DrawTest" and inside is a method

public static DrawRandomRectangle(Bitmap g)
{

}

I want to call that method and draw bunches of stuff and then update the pictureBox that uses the image on a separate thread.

To simplify, I'm not trying to make anything specific I'm just trying to learn how to draw and update an image inside of a picturebox on a separate thread.