Arrow keys don't work after programmatically setting ListView.SelectedItem

Question

I have a WPF ListView control, ItemsSource is set to an ICollectionView created this way:

var collectionView = 
  System.Windows.Data.CollectionViewSource.Ge         


        

Answer 1

It's possible to focus an item with BeginInvoke after finding it by specifying priority:

Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(() =>
{
    var lbi = AssociatedObject.ItemContainerGenerator.ContainerFromIndex(existing) as ListBoxItem;
    lbi.Focus();
}));