SelectedIndexChanged event and the list view control.

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From: Robin Tucker (idontwanttobespammedanymore_at_reallyidont.com)
Date: 04/23/04 

Date: Fri, 23 Apr 2004 14:56:59 +0100

When volume testing my application I have noticed a big problem with
listview controls populated with large numbers of items (ok, when I say
large, I mean 3 or 4 hundred items, so in the grand scheme of things, quick
small!).

The problem is that I am using a multiple selection list view and if the
user selects item 1 and then Shift-selects to the end of the list, the
selectedindex event is fired around 400 times! This means that any events I
fire or things I do in the handler get executed once for each new selected
item.

What I want to do is detect a selection change in the round, not on an
individual item basis, so I can fire my event just once when a new "multiple
selection" is made.

How can I do this?

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