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        /// <summary>
        /// Does load all movies from XML using LINQ for initial ordering.
        /// The loading will be done once when the application has started.
        /// </summary>
        /// <returns>true when load of XML has succeeded.</returns>
        private bool loadXml() {
            XElement element = XElement.Load(@"Resources/MoviesDatabase.xml");
            if (null != element) {
                var temp = from dvd in element.Descendants("dvd")
                    orderby dvd.Attribute("title").Value
                    select new Movie {
                        Title       = dvd.Attribute("title").Value,
                     
                        Url         = (null != dvd.Element("url"))? dvd.Element("url").Value: "",
                        Runtime     = Convert.ToInt32(dvd.Element("runtime").Value),
                        Year        = (null != dvd.Element("year-of-publication"))? Convert.ToInt32(dvd.Element("year-of-publication").Value):-1,
                        AspectRatio = dvd.Element("aspect-ratio").Value,
                        DirectedBy  = (from directedBy in dvd.Descendants("directed-by") select directedBy.Value).ToList(),
                        Actors      = (from actor in dvd.Descendants("actor") select actor.Value).ToList(),
                        Genre       = (from genre in dvd.Descendants("tag")   select genre.Value).ToList()
                    };

                _gridData = new List<Movie>();
                foreach(Movie movie in temp) {
                    //_logging.TraceEvent(TraceEventType.Information, 1, movie.Title);
                    _gridData.Add(movie);
                }
                
                return _gridData.Count > 0;
            }
            return false;
        }

        /// <summary>
        /// This is to assign the grid data to the control when the control is visible.
        /// </summary>
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            dataGridMovies.ItemsSource = _gridData;
        }					

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List<Movie> _gridData;					

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        public MainWindow()
        {
            var watch = Stopwatch.StartNew();
            loadXml();
            watch.Stop();
            _logging.TraceEvent(TraceEventType.Information, 1, " Time Elapsed {0} ms", watch.ElapsedMilliseconds);

            InitializeComponent();
        }