//this works for adding new items, but not for adding missing items or highlighting existing ones. why?
private void SetSelectedListItem(NotifyingMetadataItem selection)
{
if (selection != null)
{
CollectionViewSource cvs = (CollectionViewSource)FindResource("MetadatasCVS");
if (cvs != null)
{
cvs.View.MoveCurrentTo(selection);
}
//MetadataList.SelectedItem = selection;
MetadataList.ScrollIntoView(selection);
FocusHelper.Focus(FocusableItem);
}
}