void OnItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
var oldIndex = SelectedIndex;
var newIndex = SelectedIndex = SelectedIndex.Clamp(-1, Items.Count - 1);
// If the index has not changed, still need to change the selected item
if (newIndex == oldIndex)
{
UpdateSelectedItem(newIndex);
}
}
void ItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
AddItems(e);
break;
case NotifyCollectionChangedAction.Remove:
RemoveItems(e);
break;
default: // Move, replace, reset
ResetItems();
break;
}
SelectedIndex = SelectedIndex.Clamp(-1, Items.Count - 1);
UpdateSelectedItem();
}
void OnItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
SelectedIndex = SelectedIndex.Clamp(-1, Items.Count - 1);
}