Microsoft.Phone.Controls.ContextMenu.OnOwnerUnloaded C# (CSharp) Method

        private void OnOwnerUnloaded(object sender, RoutedEventArgs e)
        {
            if (null != _rootVisual)
            {
                _rootVisual.ManipulationCompleted -= OnRootVisualManipulationCompleted;
                _rootVisual.OrientationChanged -= OnEventThatClosesContextMenu;
            }
        }