How to get the drive letter of USB device using WMI

Question

I need to track the USB insertion and removal events from the C# application so I came up with the following ideas based on the other questions on SO.

I can\'t use this

Answer 1

This is a refactored version of michalk's answer for C# 8.

I used it in combination with the answers for this, Detecting USB drive insertion and removal using windows service and c#, related question

        static IEnumerable<(string deviceId, string pnpDeviceId, string driveLetter)> SelectDeviceInformation()
        {
            foreach (ManagementObject device in SelectDevices())
            {
                var deviceId = (string)device.GetPropertyValue("DeviceID");
                var pnpDeviceId = (string)device.GetPropertyValue("PNPDeviceID");
                var driveLetter = (string)SelectPartitions(device).SelectMany(SelectDisks).Select(disk => disk["Name"]).Single();

                yield return (deviceId, pnpDeviceId, driveLetter);
            }

            static IEnumerable SelectDevices() => new ManagementObjectSearcher(
                    @"SELECT * FROM Win32_DiskDrive WHERE InterfaceType LIKE 'USB%'").Get()
                .Cast();

            static IEnumerable SelectPartitions(ManagementObject device) => new ManagementObjectSearcher(
                    "ASSOCIATORS OF {Win32_DiskDrive.DeviceID=" +
                    "'" + device.Properties["DeviceID"].Value + "'} " +
                    "WHERE AssocClass = Win32_DiskDriveToDiskPartition").Get()
                .Cast();

            static IEnumerable SelectDisks(ManagementObject partition) => new ManagementObjectSearcher(
                    "ASSOCIATORS OF {Win32_DiskPartition.DeviceID=" +
                    "'" + partition["DeviceID"] + "'" +
                    "} WHERE AssocClass = Win32_LogicalDiskToPartition").Get()
                .Cast();
        }