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

This all seems a little bit intrusive...I went with rewriting the logic myself:

public class CustomListView : ListView
{
            protected override void OnPreviewKeyDown(KeyEventArgs e)
            {
                // Override the default, sloppy behavior of key up and down events that are broken in WPF's ListView control.
                if (e.Key == Key.Up)
                {
                    e.Handled = true;
                    if (SelectedItems.Count > 0)
                    {
                        int indexToSelect = Items.IndexOf(SelectedItems[0]) - 1;
                        if (indexToSelect >= 0)
                        {
                            SelectedItem = Items[indexToSelect];
                            ScrollIntoView(SelectedItem);
                        }
                    }
                }
                else if (e.Key == Key.Down)
                {
                    e.Handled = true;
                    if (SelectedItems.Count > 0)
                    {
                        int indexToSelect = Items.IndexOf(SelectedItems[SelectedItems.Count - 1]) + 1;
                        if (indexToSelect < Items.Count)
                        {
                            SelectedItem = Items[indexToSelect];
                            ScrollIntoView(SelectedItem);
                        }
                    }
                }
                else
                {
                    base.OnPreviewKeyDown(e);
                }
            }
}