WPF ListView.CurrentChanged too fast for binding

Question

My case:

• MVVM
• ListView+Details(custom UserControl)
• List bound to MV.Items (IsSynchronizedWithCurrent=true)
• Details bound to MV.Items.Current
• MV.Items.Count == 100
• about 0.2sec to read details (lazy mode)

When I hold the down arrow on the list, very strange things happen:

• list items order change
• current changes in the random order
• CPU usage drastically increments and eventually all hangs.

I've read some post that one should start the timer or run handler in the background, but I am not able to do that, since all the binding WPF does for me.

Is there some way to instruct the binding in my DetailsControl, to wait a while before accepting CurrentItem? Or should I just resign from the clean solution and write custom code in my MV to handle that?

Answer 1

See my codeplex project: http://wpfcollections.codeplex.com/

There is LazyCurrentCollection that should help.