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modifed GetSerialPorts() for more reliable retrieval of all available ports

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This commit is contained in:
Edward Wright 2019-06-05 11:02:26 -04:00
parent b9841375c9
commit a76d13f75c
1 changed files with 12 additions and 3 deletions
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15
SimplySerial/SimplySerial.cs
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@ -361,20 +361,23 @@ namespace SimplySerial
/// Modified from the example written by Kamil Górski (freakone) available at
/// http://blog.gorski.pm/serial-port-details-in-c-sharp
/// https://github.com/freakone/serial-reader
/// Some modifications were based on this stackoverflow thread:
/// https://stackoverflow.com/questions/11458835/finding-information-about-all-serial-devices-connected-through-usb-in-c-sharp
/// </summary>
/// <returns>List of available serial ports</returns>
private static List<ComPort> GetSerialPorts()
{
const string vidPattern = @"VID_([0-9A-F]{4})";
const string pidPattern = @"PID_([0-9A-F]{4})";
using (var searcher = new ManagementObjectSearcher("SELECT * FROM WIN32_SerialPort"))
const string namePattern = @"(?<=\()COM[0-9]{1,3}(?=\)$)";
using (var searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_PnPEntity WHERE ClassGuid=\"{4d36e978-e325-11ce-bfc1-08002be10318}\""))
{
var ports = searcher.Get().Cast<ManagementBaseObject>().ToList();
return ports.Select(p =>
{
ComPort c = new ComPort();
c.name = p.GetPropertyValue("DeviceID").ToString();
c.name = p.GetPropertyValue("Name").ToString();
c.vid = p.GetPropertyValue("PNPDeviceID").ToString();
c.description = p.GetPropertyValue("Caption").ToString();
@ -386,6 +389,12 @@ namespace SimplySerial
if (mPID.Success)
c.pid = mPID.Groups[1].Value;
Match mName = Regex.Match(c.name, namePattern);
if (mName.Success)
c.name = mName.Value;
else
c.name = "COM??";
return c;
}).ToList();