How to get notified when a drive letter becomes available

Is it possible to get notified (without polling, but via an event) when a drive letter becomes accessible. For example if you have an external hard drive that always appears as drive F - is it possible to have an event raised when that is connected and F becomes accessible?

From stackoverflow robintw

• Okay.. found what I was looking for :)

  Take a look at this VBScript: (source):

  strComputer = "."
  Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
  
  Set colEvents = objWMIService.ExecNotificationQuery _
      ("Select * From __InstanceOperationEvent Within 10 Where " _
          & "TargetInstance isa 'Win32_LogicalDisk'")
  
  Do While True
      Set objEvent = colEvents.NextEvent
      If objEvent.TargetInstance.DriveType = 2 Then 
          Select Case objEvent.Path_.Class
              Case "__InstanceCreationEvent"
                  Wscript.Echo "Drive " & objEvent.TargetInstance.DeviceId & _
                      " has been added."
              Case "__InstanceDeletionEvent"
                  Wscript.Echo "Drive " & objEvent.TargetInstance.DeviceId & _
                      " has been removed."
          End Select
      End If
  Loop
  

  I leave it to your exercise to port it to C#.

  Instead of polling all the time you can use a WMI event sink.

  From VVS

• You can wait for the WM_DEVICECHANGE message, all the details are at:

  http://msdn.microsoft.com/en-us/library/aa363215(VS.85).aspx

  You're going to have to create a window to receive this message, the window can be hidden if you need, to get this message in WinForms just override the Form.WndProc method

  From Nir