Catrobat.IDE.WindowsPhone.Controls.ListPickerControl.ListPicker.SelectedItemPropertyChangedCallback C# (CSharp) Method

        private static void SelectedItemPropertyChangedCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
        {
            var instance = dependencyObject as ListPicker;
            if (instance != null)
            {
                var newObject = dependencyPropertyChangedEventArgs.NewValue ?? instance.NullItem;

                var selectableItem = newObject as ISelectable;
                if (selectableItem != null)
                    selectableItem.IsSelected = false;

                instance.ContentControlSelectedItem.Content = newObject;
            }
        }