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Detect USB Pen Drives

Posted on 2004-10-17
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Last Modified: 2008-01-09
Hi

Is it possible in vb to detect any USB Pen drives attached to the computer?

Thanks
Adam
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Question by:adam_pedley
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6 Comments
 
LVL 34

Expert Comment

by:flavo
ID: 12335581
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LVL 4

Author Comment

by:adam_pedley
ID: 12335629
Thanks

but how do i scan already existing drives to find a flash drive, i cant always depend that my program will be loaded before the flash drive is plugged in
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Accepted Solution

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armoghan earned 1500 total points
ID: 12345507
Get all drives and iterate through all the derive types and see there type

see the following links for device type
http://www.codeproject.com/csharp/bienzsysinfo.asp
http://custom.programming-in.net/articles/art9-1.asp?f=GetDriveType
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LVL 18

Expert Comment

by:armoghan
ID: 12345516
This is how you can get all the drives
http://www.csharphelp.com/archives2/archive363.html
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LVL 4

Author Comment

by:adam_pedley
ID: 12345584
Thanks

Here is the final code I came up with that detects all drives and finds out what type they are


    Public Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Integer

    Private Sub Detect_Drives()
        txtDrives.Clear()
        Try
            Dim str() As String = Directory.GetLogicalDrives()
            Dim i As Integer = 0
            While i < str.Length
                txtDrives.AppendText(str(i) & "     " & GetDriveType(str(i)) & vbCrLf)
                i += 1
            End While
        Catch ex As IOException
            MsgBox(ex.Message)
        End Try
End Sub
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LVL 4

Author Comment

by:adam_pedley
ID: 12345599
Also remember to import

imports system.io

One error i did find is that the site http://custom.programming-in.net/articles/art9-1.asp?f=GetDriveType thinks flash drives are type # 6 but all my flash drives come back as type # 2

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