BindableApplicationBar.BindableApplicationBar.DetachButton C# (CSharp) Méthode

        private void DetachButton(BindableApplicationBarButton button)
        {
            if (button.GetBindingExpression(DataContextProperty) == null &&
                button.GetValue(DataContextProperty) == this.DataContext)
            {
                button.DataContext = null;
            }

            button.Detach();
        }
        #endregion