public static string[] GetPortNames(UsbStick usbStick)
{
var results = new List <string>();
using (var searcher = new ManagementObjectSearcher(@"SELECT * FROM WIN32_SerialPort"))
{
var managementObjects = searcher.Get().Cast <ManagementBaseObject>().ToArray();
foreach (var managementObject in managementObjects)
{
var properties = managementObject.Properties.Cast <PropertyData>();
var pnpDeviceID = properties.SingleOrDefault(element => element.Name == "PNPDeviceID");
if (pnpDeviceID == null)
{
continue;
}
var deviceID = properties.SingleOrDefault(element => element.Name == "DeviceID");
if (deviceID == null)
{
continue;
}
if (pnpDeviceID.Value.ToString().Contains($"VID_{usbStick.VendorID:X4}&PID_{usbStick.ProductID:X4}"))
{
results.Add(deviceID.Value.ToString());
}
}
}
return(results.ToArray());
}
public SerialPort(UsbStick stick)
{
if (stick == null)
{
throw new ArgumentNullException(nameof(stick));
}
var portName = GetPortNames(stick).FirstOrDefault();
if (portName == null)
{
throw new ArgumentOutOfRangeException(nameof(stick), stick, "Usb stick not found.");
}
_port = new System.IO.Ports.SerialPort(portName, 115200, System.IO.Ports.Parity.None, 8, System.IO.Ports.StopBits.One);
}
