public void getDataCategory()
        {
            Common common = new Common();
            string data = common.ReadFile("Data/Category.txt");

            lstCategory = JsonConvert.DeserializeObject<List<Category>>(data);
        }
        private void addParaItem()
        {
            PanoramaItem panoItem = new PanoramaItem();
            WebBrowser webBrower = new WebBrowser();
            Common common = new Common();
            common.SaveFilesToIsoStore(category.pageURL);

            for(int i = 0; i < category.pageName.Count; i++) {
                panoItem = new PanoramaItem();
                panoItem.Header = category.pageName[i];
                PageView.Items.Add(panoItem);
                webBrower = new WebBrowser();
                webBrower.Navigate(new Uri(category.pageURL[i], UriKind.Relative));
                panoItem.Content = webBrower;
            }
            //panoItem.Header =
        }