Can I add another ITemData to a listbox??

I have a listbox that I added

Listbox.AddItem customer name
Listbox.Itemdata(listcount-1) = CustomerNumber

How can I add another ItemData if is possible, I want to add
integers from 1 to .....5 per say.
:confused:

you can't... the best thing to do is make an array (or collection, whichever is most apt) to hold the data, then put the array index into the ItemData.