System.IO.Ports.SerialPort.GetDefaultPortName C# (CSharp) Method

		static string GetDefaultPortName ()
		{
			string[] ports = GetPortNames();
			if (ports.Length > 0) {
				return ports[0];
			} else {
				int p = (int)Environment.OSVersion.Platform;
				if (p == 4 || p == 128 || p == 6)
					return "ttyS0"; // Default for Unix
				else
					return "COM1"; // Default for Windows
			}
		}