I am attempting to convert this xaml binding to it\'s C# counterpart for various reasons:
I believe that you need to make the ActualWidthProperty throw a NotifyPropertyChanged event. Otherwise, the binding will not know to update when the property changes. Whenever I've done bindings, I've always had to implement INotifyPropertyChanged.
You might try extending the list view class and then implementing it on the width property. I gave a similar answer here: WPF Toolkit DataGrid column resize event