I posted this late Friday with no good responses.

I'm trying to figure out which item in a multi select list box was last
selected. Not the last item in the list, but the last item selected.

For example... A list box with three items "List 1", "List 2", and "List
3". The user could select "List 3" and then "List 1". I would like the
algorithm to tell me that on the second Listbox change event... that "List
1" was selected.

Then on the flip side.... the logic would have to know whether an item was
deselected as well.

I played around with using a couple of collection objects... but couldn't
come up with a good way to compare the two collections to find the
difference... which would in theory tell me what object had changed in the
listbox.

Any thoughts?

Thanks,
Brian