Yolo

One way might be to add a PictureBox control. It would serve
as the "canvas" on which to draw the line/curve. (You could
also just draw on the Form, but a PB gives you more flexibility).

Then, do draw a line, you could use the Line Method. In its generic
form, the syntax is

object.Line (x1, y1) - (x2, y2)

where object is the Form name or the PB name, and
x1, y1, x2, y2 are the line's beginning and ending coordinates.

Spoo