/// <summary>
        /// Invoked when this page is about to be displayed in a Frame.
        /// </summary>
        /// <param name="e">Event data that describes how this page was reached.  The Parameter
        /// property is typically used to configure the page.</param>
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            viewModel = (ViewModel)e.Parameter;

            viewModel.SelectedItemIndex = -1;
            viewModel.ForumItemList.Add(new ForumItem
            {
                Name = "Android开发论坛",
                TopicCount = 4,
                Link = "http://www.devdiv.com/forum-110-1.html",
                Info = "Android开发论坛、Android开发者论坛、环境搭建、应用开发、驱动开发、系统移植、文档"
            });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Android开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "iOS开发论坛/iPhone开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "iOS开发资料/iPhone开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "微软/诺基亚 Windows Phone开发论坛 ", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Windows Phone开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem
            {
                Name = "Windows 8 开发论坛 ",
                TopicCount = 8,
                Link = "http://www.devdiv.com/forum-102-1.html",
                Info = "Windows 8 代码、教程、入门、文档、视频"
            });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            this.DataContext = viewModel;

            viewModel.PropertyChanged += (sender, args) =>
            {
                if (args.PropertyName == "SelectedItemIndex")
                {
                    ForumList.SelectedIndex = viewModel.SelectedItemIndex;
                }
            };
        }
        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            viewModel = new ViewModel();

            this.InitializeComponent();
            this.Suspending += OnSuspending;
        }
        public ListPage()
        {
            viewModel = new ViewModel();
            viewModel.SelectedItemIndex = -1;
            viewModel.ForumItemList.Add(new ForumItem { Name = "Android开发论坛", TopicCount = 4, Link = "http://www.devdiv.com/forum-110-1.html",
                                                        Info = "Android开发论坛、Android开发者论坛、环境搭建、应用开发、驱动开发、系统移植、文档"});
            viewModel.ForumItemList.Add(new ForumItem { Name = "Android开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "iOS开发论坛/iPhone开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "iOS开发资料/iPhone开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "微软/诺基亚 Windows Phone开发论坛 ", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Windows Phone开发资料", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Windows 8 开发论坛 ", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html",
                                                        Info = "Windows 8 代码、教程、入门、文档、视频"});
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });
            viewModel.ForumItemList.Add(new ForumItem { Name = "Symbian开发论坛", TopicCount = 8, Link = "http://www.devdiv.com/forum-102-1.html" });

            this.InitializeComponent();

            this.DataContext = viewModel;
        }