Filtering an ObservableCollection?

Question

When I bind a ListBox directly to an ObservableCollection I get the real-time updates displayed in my ListBox, but as soon as I add other LINQ methods in the mix my ListBox

Answer 1

Try using the CollectionViewSource like this:

WordsView = new CollectionViewSource();
WordsView.Filter += Words_Filter;
WordsView.Source = Words;

// ...
void Words_Filter(object sender, FilterEventArgs e)
{
    if (e.Item != null)
        e.Accepted = ((string)e.Item).Contains(":");
}