AutoCAD .NET :: How To Capture Double Click Event

Displaying a vb.net form when an autocad block reference is double-clicked. Unfortunately, I still don`t know how to capture the double-click event for a block reference from code. I have gone down the IMessageFilter path, still no success.

I have tried the addHandler for application using code supplied to me in my previous post, still no luck. I really need to be able to capture the double click event for a block reference in autocad, without overwriting the default autocad double-click behavior.

I wish to be able to double-click a block reference, capture its name, and, if the name is same as blocks created by my form, then I`d simply have my dot net form pop up, displaying a few of the block`s properties.

Below is the code module I am using, which isn`t working ofr me:

' System
Imports Microsoft.Win32
Imports System.Reflection

' AutoCAD
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.Runtime
Imports acApp = Autodesk.AutoCAD.ApplicationServices.Application
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
[code].......

And the Commands class, from which my vb.net form is generated, as well as where the ModDoubleClick.eventDoubleClick() method is called: 

Public Class Commands

' Component for displaying the Mass Straight Conveyor form
<CommandMethod("mst")> _
Public Shared Sub massStraight()
Try
' Call this to override default block dblclk event handler
[code].......