If I have a ListBox that already has some items selected (i.e. a user has selected items, and then moved on to another box that causes a postback, so the listbox is redrawn), how do I cause the box to ...

I've got a listbox, I've got items in it. It appears that the listbox simply calls the ToString() function when you add an item and uses that as it's display. For my item, the ToString() simply ...