I'm trying to find a particular USB device (1 or more) connected to my computer and retrieve the relevant path to the mounted drive. Ideally, it would be by finding the VID/PID of the USB device, but I'm not sure how to do that yet. The following works, but there must be some way to get the data in a single query.
What I'm doing here is looking or a physical drive that has a model matching HS SD Card Bridge USB Device and finding the physical drive # associated and using that to find the mounted partition..
foreach (ManagementObject disk in disks.Get()) {
//look for drives that match our string
Match m = Regex.Match(disk["model"].ToString(), "HS SD Card Bridge USB Device");
if (m.Success) {
m = Regex.Match(disk["DeviceID"].ToString(), #"PHYSICALDRIVE(\d+)");
if (m.Success) {
int driveNumber = Int32.Parse(m.Groups[1].ToString());
ManagementObjectSearcher mapping = new ManagementObjectSearcher("SELECT * FROM Win32_LogicalDiskToPartition");
foreach (ManagementObject map in mapping.Get()) {
m = Regex.Match(map["Antecedent"].ToString(), #"Disk #" + driveNumber + ",");
if (m.Success) {
string drive = map["Dependent"].ToString();
m = Regex.Match(drive, #"([A-Z]):");
if (m.Success) {
drive = m.Groups[1].ToString(); //< -- **FOUND**
}
}
}
//USBDevice dev = new USBDevice("", "");
// list.Items.Add();
Console.WriteLine("");
}
}
}
is there a way to do this from the VID/PID and a way to construct the search query so it requires just one query?
This is the one I used earlier . This will not be the answer. But will help you .
public int GetAvailableDisks()
{
int deviceFound = 0;
try
{
// browse all USB WMI physical disks
foreach (ManagementObject drive in
new ManagementObjectSearcher(
"select DeviceID, Model from Win32_DiskDrive where InterfaceType='USB'").Get())
{
ManagementObject partition = new ManagementObjectSearcher(String.Format(
"associators of {{Win32_DiskDrive.DeviceID='{0}'}} where AssocClass = Win32_DiskDriveToDiskPartition",
drive["DeviceID"])).First();
if (partition == null) continue;
// associate partitions with logical disks (drive letter volumes)
ManagementObject logical = new ManagementObjectSearcher(String.Format(
"associators of {{Win32_DiskPartition.DeviceID='{0}'}} where AssocClass = Win32_LogicalDiskToPartition",
partition["DeviceID"])).First();
if (logical != null)
{
// finally find the logical disk entry to determine the volume name - Not necesssary
//ManagementObject volume = new ManagementObjectSearcher(String.Format(
// "select FreeSpace, Size, VolumeName from Win32_LogicalDisk where Name='{0}'",
// logical["Name"])).First();
string temp = logical["Name"].ToString() + "\\";
// +" " + volume["VolumeName"].ToString(); Future purpose if Device Name required
deviceFound++;
if (deviceFound > 1)
{
MessageBox.Show(#"Multiple Removeable media found. Please remove the another device");
deviceFound--;
}
else
{
driveName = temp;
}
}
}
}
catch (Exception diskEnumerateException)
{
}
return deviceFound;
}
Related
This form of ManagementObject (using ".DeviceID=") assignment works:
// get number of logical drives on given physical disk
int n = 0;
var id = "\\\\.\\PHYSICALDRIVE0";
var disk = new ManagementObject("Win32_DiskDrive.DeviceID=" + "'" + id + "'");
foreach (ManagementObject dp in disk.GetRelated("Win32_DiskPartition"))
{
foreach (ManagementObject ld in dp.GetRelated("Win32_LogicalDisk")) ++n;
}
This form of ManagementObject (using ".Number=") assignment fails:
// get number of logical drives on given physical disk
int n = 0;
var id = "0";
ManagementObject disk = new ManagementObject("root\\Microsoft\\Windows\\Storage:MSFT_Disk.Number=" + "'" + id + "'");
foreach (ManagementObject dp in disk.GetRelated("MSFT_Partition"))
{
foreach (ManagementObject ld in dp.GetRelated("MSFT_Volume")) ++n;
}
The exception is "Invalid object path". I have spent an embarrassing amount of time trying to figure out what I am doing wrong...and have no clue.
The specific item being searched for here is not the relevant issue. The proper syntax of using the two statements is what I am trying to understand...
The path for the working case is: "root\CIMV2" and the path to the failing case is: "root\Microsoft\Windows\Storage".
The failing statement is: "foreach (ManagementObject dp in disk.GetRelated("MSFT_Partition"))"
#user9938: I appreciate your reply and the focus on the MSFT_xxx items. I was looking for an analogous syntax solution to the Win32_xxx approach.
After considerable trial and error, it appears that the approach of assigning the specific disk directly in the ManagementObject declaration statement is simply not supported when using MSFT_Disk.
Either of these two statements work correctly:
var disk = new ManagementObject("Win32_DiskDrive=
var disk = new ManagementObject("Win32_DiskDrive.DeviceID=
There does not appear to be any analogous statement when using MSFT_Disk.
Thus, the simplest code solution is:
var phy = "0"; // ... or any valid disk index
int num = 0;
var disk = new ManagementObject("Win32_DiskDrive='\\\\.\\PHYSICALDRIVE" + phy + "'");
foreach (ManagementObject dp in disk.GetRelated("Win32_DiskPartition"))
{
foreach (ManagementObject ld in dp.GetRelated("Win32_LogicalDisk")) ++num;
}
There are a number of ways to retrieve the information. Try the following instead:
private int GetNumberOfLogicalDrives(int number)
{
int numLogicalDrives = 0;
using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(new ManagementScope(#"root\Microsoft\Windows\Storage"), new SelectQuery($"SELECT * FROM MSFT_Disk WHERE Number = {number}")))
{
using (ManagementObjectCollection logicalDrives = searcher.Get())
{
if (logicalDrives != null && logicalDrives.Count > 0)
{
foreach (ManagementObject mObj in logicalDrives)
{
//re-initialize
numLogicalDrives = 0;
if (mObj == null)
continue;
foreach (ManagementObject mObjDP in mObj.GetRelated("MSFT_Partition"))
{
if (mObjDP == null)
continue;
foreach (ManagementObject mObjLD in mObjDP.GetRelated("MSFT_Volume"))
{
if (mObjLD == null)
continue;
//skip if there isn't a drive letter
if (String.IsNullOrEmpty(mObjLD["DriveLetter"]?.ToString().Trim()))
continue;
numLogicalDrives++; //increment
}
}
Debug.WriteLine($"number: {number}; numLogicalDrives: {numLogicalDrives}");
}
}
}
}
return numLogicalDrives;
}
Usage:
int numLogicalDrives = GetNumberOfLogicalDrives(0);
Resources:
System.Management
I am trying to show the vid/pid and the drive letter of a usb drive when I connect it to my computer. I'm actually able to do both, but not at the same time.
1: I can use Win32_DiskDrive to get to Win32_LogicalDisk and extract the drive letter. But the deviceId has a non-numerical pid/vid which I can't use.
2: I can use Win32_USBHub or Win32_PnPEntity to extract the vid/pid, but I can't find a link between them and the drive letter.
public void CheckForUsbDevice()
{
string text =
"SELECT * FROM __InstanceCreationEvent " +
"WITHIN 2 "
+ "WHERE TargetInstance ISA 'Win32_PnPEntity'";
ManagementEventWatcher watcher = new ManagementEventWatcher();
WqlEventQuery query = new WqlEventQuery(text);
watcher.EventArrived += new EventArrivedEventHandler(watcher_EventArrived);
watcher.Query = query;
watcher.Start();
Console.ReadKey();
}
static readonly Guid GUID_DEVCLASS_USB = new Guid("{36fc9e60-c465-11cf-8056-444553540000}");
static void watcher_EventArrived(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject instance = (ManagementBaseObject)e.NewEvent["TargetInstance"];
if ((new Guid((string)instance["ClassGuid"]) == GUID_DEVCLASS_USB) && ((string)instance.Properties["Name"].Value == "USB Mass Storage Device"))
{
// we're only interested by USB devices, dump all props
foreach (var property in instance.Properties)
{
Console.WriteLine(property.Name + " = " + property.Value);
}
}
}
This has the output:
Availability =
Caption = USB Mass Storage Device
ClassGuid = {36fc9e60-c465-11cf-8056-444553540000}
CompatibleID = System.String[]
ConfigManagerErrorCode = 0
ConfigManagerUserConfig = False
CreationClassName = Win32_PnPEntity
Description = USB Mass Storage Device
DeviceID = USB\VID_0911&PID_1F40&MI_00\6&27CAD51B&0&0000
ErrorCleared =
ErrorDescription =
HardwareID = System.String[]
InstallDate =
LastErrorCode =
Manufacturer = Compatible USB storage device
Name = USB Mass Storage Device
PNPClass = USB
PNPDeviceID = USB\VID_0911&PID_1F40&MI_00\6&27CAD51B&0&0000
PowerManagementCapabilities =
PowerManagementSupported =
Present = True
Service = USBSTOR
Status = OK
StatusInfo =
SystemCreationClassName = Win32_ComputerSystem
SystemName = WINDEV1905EVAL
I need a link between WMI classed containing the numerical pid/vid and the drive letter or a different way how that can be achieved.
I think it might be possible to use DeviceIoControl, but I have no idea where to start there.
Any help is highly appreciated.
how can i get a list of hard disks and their partitions(their logical drives) on my computer in c#?
iam looking for code that gives me similar results
harddisk0:partitions are C,D
harddisk1:partitions are C,F,D
i have tried this code
foreach (ManagementObject drive in search.Get())
{
string antecedent = drive["DeviceID"].ToString();
// the disk we're trying to find out about
antecedent = antecedent.Replace(#"\", "\\");
// this is just to escape the slashes
string query = "ASSOCIATORS OF {Win32_DiskDrive.DeviceID='"
+ antecedent
+ "'} WHERE AssocClass = Win32_DiskDriveToDiskPartition";
using (ManagementObjectSearcher partitionSearch = new ManagementObjectSearcher(query))
{
foreach (ManagementObject part in partitionSearch.Get())
{
//...pull out the partition information
Console.WriteLine("Dependent : {0}", part["Dependent"]);
}
}
}
knowing that dependent is a Reference to the instance representing the disk partition residing on the disk drive.
but iam getting the exception Not Found
what should i write please?
here is c# solution generated by me
foreach (ManagementObject drive in search.Get())
{
string antecedent = drive["DeviceID"].ToString(); // the disk we're trying to find out about
antecedent = antecedent.Replace(#"\", "\\"); // this is just to escape the slashes
string query = "ASSOCIATORS OF {Win32_DiskDrive.DeviceID='" + antecedent + "'} WHERE AssocClass = Win32_DiskDriveToDiskPartition";
using (ManagementObjectSearcher partitionSearch = new ManagementObjectSearcher(query))
{
foreach (ManagementObject part in partitionSearch.Get())
{
//...pull out the partition information
MessageBox.Show(part["DeviceID"].ToString());
query = "ASSOCIATORS OF {Win32_DiskPartition.DeviceID='" + part["DeviceID"] + "'} WHERE AssocClass = Win32_LogicalDiskToPartition";
using (ManagementObjectSearcher logicalpartitionsearch = new ManagementObjectSearcher(query))
foreach (ManagementObject logicalpartition in logicalpartitionsearch.Get())
MessageBox.Show(logicalpartition["DeviceID"].ToString());
}
}
}
the plan of this code is described in this script https://blogs.technet.microsoft.com/heyscriptingguy/2005/05/23/how-can-i-correlate-logical-drives-and-physical-disks/
I'm trying to create a piece of software that can save a USB device's info, such as: Name, Total Space, Free Space, Format Type, etc. I've used DriveInfo[] but I can't work out how to save each INDIVIDUAL piece for different USB devices separately, so I know which USB device applies to what info. I'm trying to save each USB device and it's info to a text file. Here's what I have:
DriveInfo[] loadedDrives = DriveInfo.GetDrives();
foreach (DriveInfo ld in loadedDrives)
{
if (ld.DriveType == DriveType.Removable)
{
if (ld.IsReady == true)
{
deviceInfo.Add(ld.VolumeLabel + ": , " + ld.TotalSize + ": , " + ld.AvailableFreeSpace + ": , " + ld.DriveFormat);
}
}
}
foreach (String st in deviceInfo)
{
string[] deviceSel;
// DriveInfo dInfo;
deviceSel = st.Split(splitChar);
if (itemSelected.Contains(deviceSel[0]))
{
//Check That USB drive is the one thats selected
MessageBox.Show(deviceSel[0]);
break;
}
}
Is there an easier way than what I've done? Because the further I try and solve the problem, the more complex the code gets. Cheers
Ok, you don't need to put into an array of string, keep them as DriveInfo:
DriveInfo[] loadedDrives = DriveInfo.GetDrives();
List<DriveInfo> deviceInfo = new List<DriveInfo>();
foreach (DriveInfo ld in loadedDrives)
{
if (ld.DriveType == DriveType.Removable)
{
if (ld.IsReady == true)
{
deviceInfo.Add(ld);
}
}
}
foreach (DriveInfo st in deviceInfo)
{
//can write whatever you want now
}
But that first loop can be done a lot easier with linq:
DriveInfo[] loadedDrives = DriveInfo.GetDrives();
var deviceInfo = DriveInfo.GetDrives()
.Where(d=>d.DriveType == DriveType.Removable && d.IsReady);
I want to detect when the user plugs in or removes a USB sound card. I've managed to actually catch the event when this happens, but I can't tell what just got plugged in.
I tried an approach based on this question:
string query =
"SELECT * FROM __InstanceCreationEvent " +
"WITHIN 2 "
+ "WHERE TargetInstance ISA 'Win32_PnPEntity'";
var watcher = new ManagementEventWatcher(query);
watcher.EventArrived += new EventArrivedEventHandler(watcher_EventArrived);
watcher.Start();
While I get the notifications via the EventArrived event, I have no idea how to determine the actual name of the device that just got plugged in. I've gone through every property and couldn't make heads or tails out of it.
I also tried a different query:
var query = new WqlEventQuery("SELECT * FROM Win32_DeviceChangeEvent where EventType = 1 or EventType = 2");
var watcher = new ManagementEventWatcher(query);
watcher.EventArrived += watcher_EventArrived;
watcher.Stopped += watcher_Stopped;
watcher.Query = query;
watcher.Start();
but also to no avail. Is there a way to find the name of the device that got plugged in or removed.
The bottom line is that I'd like to know when a USB sound card is plugged in or removed from the system. It should work on Windows 7 and Vista (though I will settle for Win7 only).
EDIT: Based on the suggestions by the winning submitter, I've created a full solution that wraps all the functionality.
If I use your first code, I can define my event like this:
// define USB class guid (from devguid.h)
static readonly Guid GUID_DEVCLASS_USB = new Guid("{36fc9e60-c465-11cf-8056-444553540000}");
static void watcher_EventArrived(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject instance = (ManagementBaseObject )e.NewEvent["TargetInstance"];
if (new Guid((string)instance["ClassGuid"]) == GUID_DEVCLASS_USB)
{
// we're only interested by USB devices, dump all props
foreach (var property in instance.Properties)
{
Console.WriteLine(property.Name + " = " + property.Value);
}
}
}
And this will dump something like this:
Availability =
Caption = USB Mass Storage Device
ClassGuid = {36fc9e60-c465-11cf-8056-444553540000}
CompatibleID = System.String[]
ConfigManagerErrorCode = 0
ConfigManagerUserConfig = False
CreationClassName = Win32_PnPEntity
Description = USB Mass Storage Device
DeviceID = USB\VID_18A5&PID_0243\07072BE66DD78609
ErrorCleared =
ErrorDescription =
HardwareID = System.String[]
InstallDate =
LastErrorCode =
Manufacturer = Compatible USB storage device
Name = USB Mass Storage Device
PNPDeviceID = USB\VID_18A5&PID_0243\07072BE66DD78609
PowerManagementCapabilities =
PowerManagementSupported =
Service = USBSTOR
Status = OK
StatusInfo =
SystemCreationClassName = Win32_ComputerSystem
SystemName = KILROY_WAS_HERE
This should contain everything you need, including the device ID that you can get with something like instance["DeviceID"].
EDIT 1: Oh is see that it is not a USB storage device but only a USB device. I will look for another solution.
Two links that describe the same problem:
http://hintdesk.com/c-catch-usb-plug-and-unplug-event/
http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/37123526-83fa-4e96-a767-715fe225bf28/
if (e.NewEvent.ClassPath.ClassName == "__InstanceCreationEvent")
{
Console.WriteLine("USB was plugged in");
//Get disk letter
foreach (ManagementObject partition in new ManagementObjectSearcher(
"ASSOCIATORS OF {Win32_DiskDrive.DeviceID='" + mbo.Properties["DeviceID"].Value
+ "'} WHERE AssocClass = Win32_DiskDriveToDiskPartition").Get())
{
foreach (ManagementObject disk in new ManagementObjectSearcher(
"ASSOCIATORS OF {Win32_DiskPartition.DeviceID='"
+ partition["DeviceID"]
+ "'} WHERE AssocClass = Win32_LogicalDiskToPartition").Get())
{
Console.WriteLine("Disk=" + disk["Name"]);
}
}
}
When I tried #AngryHacker solution, I noticed that the DeviceChangedEventArgs class did not ever get called, though. I removed it and just added Console.WriteLines() in the watcher_eventArrived methods.
Besides the deletion of the DeviceChangedEventArgs, here are my changes:
(at line 46 in EstablishedWatchEvents)
// setup the query to monitor removal
const string qryRemoval = "SELECT *" + "FROM __InstanceDeletionEvent "
+ "WITHIN 2 " + "WHERE TargetInstance ISA 'Win32_PnPEntity' ";
#region Events
private void insertWatcher_EventArrived(object sender, EventArrivedEventArgs e)
{
var mbo = (ManagementBaseObject) e.NewEvent["TargetInstance"];
if (new Guid((string) mbo["ClassGuid"]) == GUID_DEVCLASS_USB)
{
var deviceName = (string) mbo["Name"];
Console.WriteLine(deviceName + " was inserted");
}
}
private void removeWatcher_EventArrived(object sender, EventArrivedEventArgs e)
{
var mbo = (ManagementBaseObject)e.NewEvent["TargetInstance"];
if (new Guid((string)mbo["ClassGuid"]) == GUID_DEVCLASS_USB)
{
var deviceName = (string)mbo["Name"];
Console.WriteLine(deviceName + " was removed");
}
}
#endregion