WPF: Application Performance
It’s always worth reading MSDN articles in full as sometimes there a gem at the end of the article: If you have a choice between binding an IList<(Of )>) or an IEnumerable to an ItemsControl object, choose the IList<(Of )>) object. Binding IEnumerable to an ItemsControl forces WPF to create a wrapper IList<(Of )>) object, which means your performance is impacted by the unnecessary overhead of a second object.
