sunnypalsingh said:Using the giveIO driver will greatly simplify your life.
After installing giveIO from your application you can just use the standard IO calls inport and outport.
http://www.littlesounddj.com/awkiawki/index.cgi/GiveIO
sunnypalsingh said:As far as i know there's no built-in library in .NET to access the parallel port
You need to use some third-party library/driver
Let's wait for other replies also