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virtual port OnDataFromPort not firing

Thu Dec 18, 2008 9:52 pm

Hi there,

I have some C# code using the latest eval version of SerialTools to open a physical port, COM2, create a virtual port, COM4 and direct any data read on COM2 to COM4. All of the SerialTools events fire for both port and virtual port except for OnDataFromPort(). What I do is that when some data is read in on COM2, I perform the following statement:


The statement seems to work without any errors. However, I would have expected the vport_OnDataFromPort(string data) method to be invoked. It is not firing. Strange since vport_OnOpened fires when I open the port as a regular port.

Why is this happening?



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RE: virtual port OnDataFromPort not firing

Thu Dec 18, 2008 10:00 pm

OnDataFromPort will be invoked when the application connected to COM4 writes data to COM4

More info:


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Joined: Wed Sep 09, 2009 1:11 pm

RE: virtual port OnDataFromPort not firing

Wed Sep 09, 2009 1:19 pm

I am using Vports (and regular ports) in a WinXP application, written with NsBasic. The serial ports work fine, both sending and receiving. The Vports will only send data.

I cannot get the Vport obj_OnDataFromPort(Data) subroutine to fire. This is set up in a similar manner to the serial ports (which do work). Sending data from another application to the Vport does nothing.

What should I be looking at?

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