How do I use dataReceived event of the SerialPort Port Object in C#?

Question

I am attempting to create a small application to collect data received from an external sensor attached to COM10. I have successfully created a small C# console object and

Answer 1

I was having the very same problem with a modem that had previously worked and then one day just stopped raising the DataReceived event.

The solution in my case, very randomly, was to enable RTS e.g.

sp.RtsEnable = true;

No idea why that worked on this particular bit of kit (not a comms man at all really), nor why it had worked and then stopped but it may help somebody else one day so just posting it just in case...