WaitForBytes in .Net

[xyconyx]

Hi guys, I have downloaded the .Net trial version to talk to a RS232 device and have finally got the thing sort of talking.
My problem is the timing, and I want to use WaitForBytes but it does not appear to be a method on the nrComm1 object (private DeepSoftware.nrCommLib.NrComm nrComm1;).

any clues?