Implementing a serial communication protocol over RS232 or 485 is a really, really hard task. It requires a LOT of experience.

Represents a serial port resource. Initializes a new instance of the SerialPort class using the specified port name, baud rate. BytesToRead: Gets the number.

I've been implementing this since good old DOS days and still get stuck in some common pitfalls. Why don't you try to find a reliable third-party offering for dealing with serial communications? They will have probably ironed out all the many, many, many bugs you'll fall into yourself:-) If this is an exercise, then go ahead, it giver great satisfaction to finally master serial communications!:-) – Dec 7 '12 at 0:39.

Data events can be caused by any of the items in the enumeration. Because the operating system determines whether to raise this event or not, not all parity errors may be reported.

The DataReceived event is also raised if an Eof character is received, regardless of the number of bytes in the internal input buffer and the value of the property., DataReceived, and events may be called out of order, and there may be a slight delay between when the underlying stream reports the error and when the event handler is executed. Only one event handler can execute at a time. The DataReceived event is not guaranteed to be raised for every byte received. Use the property to determine how much data is left to be read in the buffer.

The DataReceived event is raised on a secondary thread when data is received from the object. Because this event is raised on a secondary thread, and not the main thread, attempting to modify some elements in the main thread, such as UI elements, could raise a threading exception. Osi 2200 Home Gym Manual here.

If it is necessary to modify elements in the main or, post change requests back using, which will do the work on the proper thread. For more information about handling events, see.