You see everyone I'm stuck with a problem:

I've made a program like Paint with many more thing but my problem is that I dont know how to make an eraser to erase the
drawing made on the picturebox!

I've tried to make the autoredraw value of the picturebox to false
and (as an eraser) make a shape that follow the cursor so that the shape could erase the drawing BUT it do many inconvenient!

Does anyone know how to do this?