Asynchronous read

void SetupAsyncRead(SerialPort serialPort)
{
    serialPort.DataReceived += (sender, e) => {
        byte[] buffer = new byte[4096];
        switch (e.EventType)
        {
            case SerialData.Chars:
                var port = (SerialPort)sender;
                int bytesToRead = port.BytesToRead;
                if (bytesToRead > buffer.Length)
                    Array.Resize(ref buffer, bytesToRead);
                int bytesRead = port.Read(buffer, 0, bytesToRead);
                // Process the read buffer here
                // ...
                break;
            case SerialData.Eof:
                // Terminate the service here
                // ...
                break;
        }
    };