DrawImage not to Screen but to File?

You can modify an image in memory and then save it to file. The image never has to be displayed. GDI+ permits you to create a GRAPHICS object from an Image object. Once you have a Graphics object, you are free to draw lines, circles, polygons, pixels or entire images onto the image. This is all done in memory. If the Image object you used is bound to a window, it will be displayed. If not (which is easy), it is all done behind the scenes.

Hi, DrawImage is meant to render images on the standard output. I doubt it is going to work on your scenario. Yoiu want to manipulate an image file, probably you can do something related to gdi, or you can manipulate them in byte[]. I have seen my friends done image comparisons, by converting 2 identicial images into byte array and compare... Maybe you can do something like that too... Hope it helps. Cheers.