The System.IO.Ports.SerialPort.Dispose method in C# is used to release the resources associated with an instance of the SerialPort class. This method frees up system resources such as memory and file handles that were used by the SerialPort object. It is recommended to call Dispose when you have finished using a SerialPort object to ensure proper cleanup and avoid resource leaks. By calling Dispose, you can also prevent any subsequent use of the SerialPort instance, as accessing a disposed object may result in an ObjectDisposedException being thrown.
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