Auto-detect Arduino COM port

Hi,

According to this code sample :

https://www.codeproject.com/tips/349002/select-a-usb-serial-device-via-its-vid-pid

.... you can do something like that:

 public static string AutodetectArduinoPort()
     {
         List<string> comports = new List<string>();
         RegistryKey rk1 = Registry.LocalMachine;
         RegistryKey rk2 = rk1.OpenSubKey("SYSTEM\\CurrentControlSet\\Enum");
         string temp;
         foreach (string s3 in rk2.GetSubKeyNames())
         {
             RegistryKey rk3 = rk2.OpenSubKey(s3);
             foreach (string s in rk3.GetSubKeyNames())
             {
                 if (s.Contains("VID") && s.Contains("PID"))
                 {
                     RegistryKey rk4 = rk3.OpenSubKey(s);
                     foreach (string s2 in rk4.GetSubKeyNames())
                     {
                         RegistryKey rk5 = rk4.OpenSubKey(s2);
                         if ((temp = (string)rk5.GetValue("FriendlyName")) != null && temp.Contains("Arduino"))
                         {
                             RegistryKey rk6 = rk5.OpenSubKey("Device Parameters");
                             if (rk6 != null && (temp = (string)rk6.GetValue("PortName")) != null)
                             {
                                 comports.Add(temp);
                             }
                         }
                     }
                 }
             }
         }
 
         if (comports.Count > 0)
         {
             foreach (string s in SerialPort.GetPortNames())
             {
                 if (comports.Contains(s))
                     return s;
             }
         }
 
         return "COM9";
     }