Update automatic ListBox items when alter List

Question

I have a ListBox, I populate it with ItemsSource with List.

But when I delete or add new control for this List, I need every tim

Answer 1

Instead of using a List, use an ObservableCollection. It is a list that supports change notifications for WPF:

// if this isn't readonly, you need to implement INotifyPropertyChanged, and raise
// PropertyChanged when you set the property to a new instance
private readonly ObservableCollection items = 
    new ObservableCollection();

public IList Items { get { return items; } }