gistfile1.cs

        private static bool PageDataHasChanged(PageData pageOne, PageData pageTwo)
        {
            PageType type = PageType.Load(pageOne.PageTypeName);

            foreach (var property in type.Definitions.Where(p=> GetPropertynames<CoursePage>().Contains(p.Name)))
            {
                if (pageOne[property.Name] == pageTwo[property.Name])
                {
                    continue;
                }

                if ((pageOne[property.Name] == null && pageTwo[property.Name] != null) || (pageOne[property.Name] != null && pageTwo[property.Name] == null))
                {
                    return true;
                }

                if (pageOne[property.Name].Equals(pageTwo[property.Name]))
                {
                    continue;
                }

                return true;
            }

            return false;
        }