WinRTXamlToolkit.Controls.Calendar.IsSelectionChanged C# (CSharp) Method

        private static bool IsSelectionChanged(SelectionChangedEventArgs e)
        {
            if (e.AddedItems.Count != e.RemovedItems.Count)
            {
                return true;
            }
            foreach (DateTime addedDate in e.AddedItems)
            {
                if (!e.RemovedItems.Contains(addedDate))
                {
                    return true;
                }
            }
            return false;
        }