Problem with SerialPort

Question

I\'m working with SerialPort to communicate (read only) with barcode reader.

I\'ve installed driver to operate with the reader as if it was connected via Com-port,

Answer 1

Well, bad news.

Solution by Panagiotis Kanavos does not help. The problem is still here.

.Net 4.0 doesn't help either. I've installed VS2010 - nothing changed. The unhadled exception is still thrown. Unfortunately, "tape a sign next to the USB slot: "Don't remove while in use!" seems to be the only decision...