>So I feel this is right place to post.
I feel that your first post was in the right place. If someone wants to add the C or C++ relevant links from that site to our resources sticky, that's fine. Otherwise, cross posting the same thing to multiple forums is not acceptable.
For Each ctrl As Control In Me.Controls("pnlMainPanel").Controls
If ctrl.GetType Is GetType(System.Windows.Forms.Panel) Then
For Each subCtrl As Control In ctrl.Controls
If subCtrl.GetType Is GetType(System.Windows.Forms.TextBox) Then
If subCtrl.GetType Is ...