Move mail items to a folder on close event

Hello there.
In order to keep my inbox neat I want to force my self to put mails in folders.
So I have made a form that shows all folders and it opens fine on the Inspectors Close event.
I have put a MailItem.Move DestinationFolder on the Click event of a button but I get an error message saying The item's properties and methods cannot be used inside this event procedure.
Any help would be great!
MrPloops