winforms - C#: Simple and functional way to zoom picturebox images with scroll bars -

is there simple , functional way zoom image in picturebox including scroll bars?

at moment, use picture box in panel auto scroll activated. zoom, enlarge picturebox , move scroll bars on panel. problem is, behaves strange. example: if zoom in far, margin between upper , left form border , image get's bigger , bigger.

that's zooming method. got here.

private void zoominout(bool zoom)     {         //zoom ratio images zoomed default         int zoomratio = 10;         //set zoomed width , height         int widthzoom = picturebox_viewer.width * zoomratio / 100;         int heightzoom = picturebox_viewer.height * zoomratio / 100;         //zoom = true --> zoom in         //zoom = false --> zoom out         if (!zoom)         {             widthzoom *= -1;             heightzoom *= -1;         }         //add width , height picture box dimensions         picturebox_viewer.width += widthzoom;         picturebox_viewer.height += heightzoom;      } 

any appreciated.

thanks in advance.

marco

edit: 2 screenshots of unzoomed , zoomed (16 times) image. pay attention margin between upper border of image , upper border of form.

i think better zoom(rescale) image , not picture box. take @ article - http://www.codeproject.com/articles/21097/picturebox-zoom

and

how zoom in&out image in c#