Use WMI to Associate win32_SerialPort device with win32_LogicalDrive mapping RRS feed

  • Question

  • Hi,

    My c# application requires to flash a micro-controller, which has been configured as a removable device and is connectable by means of a Virtual Com Port.

    So, I need to recognise the volume label of the mapped drive and perform the flash using a simple file copy.

    The problem is that some of the micro-controllers produce slightly different volume labels making it difficult to identify all possible cases via string comparison.
    I know how to retrieve drive info for removable devices using DriveInfo.GetDrives(). This gives me the drive letter and the volume label

    removableDriveList = (List<RemovableDrive>)DriveInfo.GetDrives()
            .Where(d => d.DriveType == DriveType.Removable)
            .Select(s => new RemovableDrive
                    Drive = s.Name,
                    Label = s.VolumeLabel
     I know how to detect the com port and recognisable description of the development boards using WMI to query Win32_SerialPorts.
    ManagementObjectCollection collection;
    using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_SerialPort"))
            collection = searcher.Get();
    var removableDevices = from ManagementObject x in collection
        where x.Properties["Name"].Value.ToString().Contains("MyManufacturer")
        select x;
        portName = (String)(removableDevices.First().GetPropertyValue("DeviceID"));

    However, I can't associate the virtual com port with the drive mapping. I want to be able to say, this device with ID COM7, manufacturer "MyManufacturer", matches drive mapping "I:\My_Microcontroller".

    I noticed (from device manager properties) that they both have the same container ID and are derived from the same usb controller, however I don't know how to access the this information from each child using WMI. Is this possible?


    • Edited by Marcpolo Sunday, April 5, 2015 11:11 AM
    • Moved by Fred Bao Monday, April 6, 2015 9:34 AM Desktop SDK Related
    Sunday, April 5, 2015 10:35 AM

All replies

  • Hello Marcpolo,

    I move it to the desktop forum since it is more related with Windows Management Instrumentation development.


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    • Edited by Fred Bao Monday, April 6, 2015 9:36 AM
    Monday, April 6, 2015 9:32 AM