private void DetachButton(BindableApplicationBarButton button) { if (button.GetBindingExpression(DataContextProperty) == null && button.GetValue(DataContextProperty) == this.DataContext) { button.DataContext = null; } button.Detach(); }
private void AttachButton(BindableApplicationBarButton button, int i) { if (button.GetBindingExpression( FrameworkElement.DataContextProperty) == null && button.GetValue( FrameworkElement.DataContextProperty) == null) { button.DataContext = this.DataContext; } button.Attach(this.applicationBar, i); }