I have a form that is showing a MessageBox using MessageBox.Show, and trying to receive events from the Help button on the MessageBox so I can execute my own code. The Microsoft documentation shows how to do this; however, using what is suggested does not work. Here's a shortened version of my code:

    Private Function MethodName() As Boolean

      AddHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested
      Select Case MessageBox.Show("Text", "Title", MessageButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2, 0, True)
        Case MsgBoxResult.Yes
          ' Do stuff
        Case MsgBoxResult.No
          ' Do stuff
        Case MsgBoxResult.Cancel
          RemoveHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested
          Return False
      End Select
      RemoveHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested

    End Function

Private Sub MsgBoxHelpRequested(ByVal sender As Object, ByVal hlpevent As System.Windows.Forms.HelpEventArgs)
  ' Breakpoint that never gets hit
  ' More code
End Sub

I've been searching for a solution to this problem, but the best I've found is this question: http://stackoverflow.com/questions/2407880/how-to-detect-help-button-press-in-windows-forms-messagebox that refers me back to the same Microsoft code that doesn't seem to be working.

Can anybody help me with this?

Thank you.