public void stopRecord(string eyelink_fileName) { try { el.sendCommand("close_data_file"); // close edf file on Host el.receiveDataFile(eyelink_fileName, eyelink_fileName); el.setOfflineMode(); //set offline mode for speedier transfer of EDF file Host el.stopRecording(); el.close(); el = null; elutil = null; } catch (Exception e) { Console.WriteLine(e.Message); } }