How to draw a line in a loading image in a C# form??

Question

Hi everyone,

In windows Application form,I have put a Picture Box on it and button which name is "Load" below the picture box.
Pressing button "Load" it opens a dialog box to have the choice of the image i want to load.
All I want to do, is to draw a line in the loading photo in the picture box,how do i achieve this?
What is the appropriate code to have the loading image with drawing line in the center of the image for example???
Thank you in advance about your time!