How to Implement a ListBox of Checkboxes in WPF?

Question

Although somewhat experienced with writing Winforms applications, the... \"vagueness\" of WPF still eludes me in terms of best practices and design patterns.

Despite pop

Answer 1

Use ObservableCollection instead of List

Edit

it implements INotifyCollectionChanged interface to let WPF know when you add/remove/modify items

Edit 2

Since you set TopicList in code, it should be a Dependency Property, not a common field

    public ObservableCollection TopicList {
        get { return (ObservableCollection)GetValue(TopicListProperty); }
        set { SetValue(TopicListProperty, value); }
    }
    public static readonly DependencyProperty TopicListProperty =
        DependencyProperty.Register("TopicList", typeof(ObservableCollection), typeof(MainWindow), new UIPropertyMetadata(null));

Edit 3

To see changes in items

1. implement INotifyPropertyChanged interface in CheckedListItem (each setter should call PropertyChanged(this, new PropertyChangedEventArgs()) event)
2. or derive CheckedListItem from DependencyObject, and convert Name, ID, IsChecked to dependency properties
3. or update them totally (topicList[0] = new CheckedListItem() { Name = ..., ID = ... })