public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            PinnableObject pinnableObject = null;

            if (value is News)
            {
                News news = value as News;

                pinnableObject = new PinnableObjectWP
                {
                    Id = string.Format("{0}-News-{1}", AppResources.APPLICATION_NAME, news.Id),
                    NavigationPage = new Uri(string.Format("/NewsPage.xaml?Id={0}", news.Id), UriKind.Relative),
                    Title = news.Title,
                    BackTitle = news.DateTime.ToString("g", CultureInfo.CurrentUICulture),
                    ImageUrl = news.ImageUrl,
                    Content = news.ShortText
                };
            }
            else if (value is Conference)
            {
                Conference conference = value as Conference;

                pinnableObject = new PinnableObjectWP
                {
                    Id = string.Format("{0}-Conference-{1}", AppResources.APPLICATION_NAME, conference.Id),
                    NavigationPage = new Uri(string.Format("/ConferencePage.xaml?Id={0}", conference.Id), UriKind.Relative),
                    Title = conference.Name,
                    BackTitle = string.Format(CultureInfo.CurrentUICulture, AppResources.FORMAT_CONFERENCE, conference.Start_DateTime, conference.End_DateTime, conference.Place),
                    ImageUrl = conference.ImageUrl,
                    Content = conference.Name
                };
            }
            else if (value is Show)
            {
                Show salon = value as Show;

                pinnableObject = new PinnableObjectWP
                {
                    Id = string.Format("{0}-Show-{1}", AppResources.APPLICATION_NAME, salon.Id),
                    NavigationPage = new Uri(string.Format("/ShowPage.xaml?Id={0}", salon.Id), UriKind.Relative),
                    Title = salon.Name,
                    BackTitle = string.Format(CultureInfo.CurrentUICulture, AppResources.FORMAT_SALON, salon.Start_DateTime, salon.End_DateTime, salon.Place),
                    ImageUrl = salon.ImageUrl,
                    Content = salon.Name
                };
            }

            return pinnableObject;
        }
        /// <summary>
        /// Create the tile and pin it to the start screen
        /// </summary>
        /// <param name="element">Element to pin</param>
        public static void CreateTile(PinnableObjectWP element)
        {
            string id = element.Id.Substring(element.Id.LastIndexOf('-') + 1);
            ShellTile tile = ShellTile.ActiveTiles.FirstOrDefault(t => t.NavigationUri.ToString().Contains(id));

            if (tile != null)
            {
                MessageBox.Show(AppResources.MSG_ALREADY_PINNED);
            }
            else
            {
                var secondaryTile = new StandardTileData
                {
                    Title = element.Title,
                    BackContent = element.Content,
                    BackgroundImage = new Uri(element.ImageUrl, UriKind.Absolute),
                    BackTitle = element.BackTitle
                };

                ShellTile.Create(element.NavigationPage, secondaryTile);
            }
        }