[Solved] Newbie: Detect USB phone

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Hi
I am playing at bit with VB.net, creating a program for my phone
.
I have established the connection etc. (USB - serial port), and everything is working fine.

But my problem is when I remove the phone, I get a program error (of course :-).

I have tried to find a way to detect if the phone is connected to the USB port, but I have not been successful in finding a good way to detect if the hardware is connected.
I would like to create a function that I can execute before communication, where I can check if the USB device is present.
Or is there a better way?

Thanks on advance and sorry for my stupid question :-)

/Graves

Posted 12-Jul-10 20:49pm

Kilsgaard

Updated 15-Jul-10 22:50pm

v2

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Estys · Answer 1 · 2010-07-12T22:40:00

Solution 1

Maybe this article helps : Detecting USB Drive Removal in a C# Program[^]
(I know it's C# and not VB but don't let that stop you!)

Cheers

Posted 12-Jul-10 22:40pm

Estys

Updated 12-Jul-10 22:41pm

v2

Comments

Johnny J. 13-Jul-10 5:39am

I doubt that would be of much help in this case, but I could be wrong...

Kilsgaard · Answer 2 · 2010-07-13T19:40:00

Hi
Thanks for your answers :-)
I got this build together, and it seems to do what I want.

Think that I am integrating it in a class and identify the phone from via the DeviceID.

VB

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
      Me.ListBox1.Items.Clear()
      Dim ManageObjSearcher As New ManagementObjectSearcher("SELECT * FROM  Win32_PnPEntity")
      Dim ManageObj As ManagementObject
      For Each ManageObj In ManageObjSearcher.Get()
          If Not ManageObj("Service") Is Nothing Then
              If ManageObj("DeviceID").ToString().StartsWith("USB") Then
                  Me.ListBox1.Items.Add(ManageObj("Name").ToString() + " - " + ManageObj("DeviceID").ToString())
              End If
          End If
      Next ManageObj
  End Sub

/Graves

Johnny J. · Answer 3 · 2010-07-12T23:40:00

Solution 2

I think the best would be to contact the phone manufacturer - they might have a SDK that you can use for this, and perhaps even code samples...

Posted 12-Jul-10 23:40pm

Johnny J.

strosfan47 · Answer 4 · 2011-08-13T03:08:00

Solution 4

A thousand thank-yous for this code! VERY helpful. -- Bopert

Posted 13-Aug-11 3:08am

strosfan47