public CheckedListBoxDemoControl() { InitializeComponent(); var ViewModel = new CheckedListBoxDemoViewModel(); ViewModel.SelectableItems.Add(new Models.SelectableItem { DisplayName = "One", IsSelected = false }); ViewModel.SelectableItems.Add(new Models.SelectableItem { DisplayName = "Two", IsSelected = true }); ViewModel.SelectableItems.Add(new Models.SelectableItem { DisplayName = "Three", IsSelected = false }); this.DataContext = ViewModel; }