Hello,
I have a form with 2 buttons (Start, Stop) and Marquee styled Progressbar.
When I click start - I running process like

When I click [START]

ProgressBar1.MarqueeAnimationSpeed = 100
ThreadPool.QueueUserWorkItem(AddressOf StartProcess)
....

Private Sub StartProcess(ByVal toState As Object)
   ProcessThread = Thread.CurrentThread
   ....
   loDS = loDriver.ConvertData()
   Invoke(New MethodInvoker(AddressOf DataConvertDone))

When I click [STOP]

     If Not ProcessThread Is Nothing Then
            If ProcessThread.IsAlive() Then
                ProcessThread.Abort()
                ProgressBar1.MarqueeAnimationSpeed = 0
            End If
     End If

And here.. I always got unhandled MESSAGEBOX... And I don't know from where!! this messagebox displays ThreadAbortException text and Ok button.. and title is - my assembly name .. and I try to put TRY/CATCH block before Invoke.... and deep to classes.. nothing help.. always this messagebox appears..

From where this messagebox comes and how to catch it?