How to detect usb device on window 7 using VB.NET ?

Question

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I have installed win.10 in my PC and I have made application in vb.net 2017 using Win32_PnPEntity class that detect computer parts, USB and MOBILE and its working very nice in win10. but when i am running this application on win.7 its not detecting any computer parts, USB and MOBILE.

What I have tried:

VB

Imports System.Management


Public Class Form1

Private Sub Get_Dtl(ByVal Val As String)
Try
Dim path As ManagementPath = New ManagementPath()
path.Server = "."
path.NamespacePath = "root\CIMV2"
Dim scope As ManagementScope = New ManagementScope(path)
Dim query As ObjectQuery = New ObjectQuery("SELECT * FROM Win32_PnPEntity")
Dim searcher As ManagementObjectSearcher = New ManagementObjectSearcher(scope, query)
Dim queryCollection As ManagementObjectCollection = searcher.Get()
Dim A As Integer = 0

For Each m In queryCollection
If Val = "USB" AndAlso m("Service") = "WUDFWpdFs" Then
A += 1
DataGridView1.Rows.Add(A, m("Caption"), m("Description"), m("DeviceID"), m("HardwareID"), m("Manufacturer"), m("Name"), m("PNPClass"), m("PNPDeviceID"), m("Service"), m("Status"))

ElseIf Val = "Mobile" AndAlso m("Service") = "WUDFWpdMtp" Then
A += 1
DataGridView1.Rows.Add(A, m("Caption"), m("Description"), m("DeviceID"), m("HardwareID"), m("Manufacturer"), m("Name"), m("PNPClass"), m("PNPDeviceID"), m("Service"), m("Status"))

ElseIf Val = "All" Then
A += 1
DataGridView1.Rows.Add(A, m("Caption"), m("Description"), m("DeviceID"), m("HardwareID"), m("Manufacturer"), m("Name"), m("PNPClass"), m("PNPDeviceID"), m("Service"), m("Status"))
End If
Next
If A = 0 Then
MsgBox("No Record Found")
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try

End Sub

Private Sub Btn_All_Click(sender As Object, e As EventArgs) Handles Btn_All.Click
DataGridView1.Rows.Clear()
Get_Dtl("All")
End Sub

Private Sub BTN_Mobile_Click(sender As Object, e As EventArgs) Handles BTN_Mobile.Click
DataGridView1.Rows.Clear()
Get_Dtl("Mobile")
End Sub

Private Sub Btn_USB_Click(sender As Object, e As EventArgs) Handles Btn_USB.Click
DataGridView1.Rows.Clear()
Get_Dtl("USB")
End Sub

End Class

Posted 23-Sep-18 20:42pm

Member 13991602

Updated 17-Jul-22 23:45pm

Leo Chapiro

v2

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Leo Chapiro 24-Sep-18 5:47am

It is difficult to say without to see your code, dude. Please share the appropriate code (not all you wrote) with us by adding it to "What have I tried".

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*dan!sh* · Answer 1 · 2018-09-24T01:49:00

You might want to take a look at DriveInfo.GetDrives Method (System.IO) | Microsoft Docs[^].

Nice folks at MS have been kind enough to wrap it up for us. Here is how you can use this method:

C#

var drives = DriveInfo.GetDrives();
		foreach (var drive in drives)
		{
			if (drive.IsReady && drive.DriveType == DriveType.Removable)
			{
				Console.WriteLine(drive.Name);
				Console.WriteLine(drive.DriveFormat);
			}
		}

I could not run this as .Net Fiddle (website I use to check snippets) denies the permissions. It should work if you have required set of permissions though.