I'm writing an application to assist in the design of an electronic system. Part of the application is a "Shopping List" that details all the items required to be purchased.

I need to add and delete items from the list and also to increase/decrease the quantity of items that have previously been added. Items with a quantity of zero should not be shown on the list.

I'm using a ListView to display the list, but I'm looking for advice for which structure to use to store the data (e.g. Array, Collection, List, Dictionary, etc)

Anybody got any experience they'd care to share with me?