장치VID/PID를 사용해서 PC에 연결되어 있는 특정 장치 찾기

getDeviceComport.cs

    private string getDeviceComport(string vid, string pid)
    {
        var comport = String.Empty;

        using (var searcher = new ManagementObjectSearcher("SELECT * FROM WIN32_SerialPort"))
        {
            var portnames = SerialPort.GetPortNames();
            var ports = searcher.Get().Cast<ManagementObjectSearcher>().ToList();

            var port = ports.FirstOrDefault(w => w["PNPDeviceID"].ToString().Contains($"{vid}&{pid}"));

            if(String.IsNullOrEmpty(port))
            {
                comport = port["DeviceID"].ToString();
            }
        }

        return comport;
    }