JSON/XML序列化与反序列化（非构造自定义类）

ApplicationDataContainer _appSettings = ApplicationData.Current.LocalSettings;  //这个是保存一些页面输入信息
private async void Save_Click(object sender, RoutedEventArgs e)
        {
            if (userName.Text == "" || userAge.Text == "")
            {
                await new MessageDialog("请输入完整的信息").ShowAsync();
                return;
            }
            ObservableCollection<School> education = new ObservableCollection<School>();
            if (school1.IsChecked == true)
                education.Add(new School() { Id = "id001", Name = school1.Content.ToString() });
            if (school2.IsChecked == true)
            {
                education.Add(new School() { Id = "id002", Name = school2.Content.ToString() });
            }
            User user = new User()
            {
                Education = education,
                Id = Guid.NewGuid().ToString(),//随机生成   前面用到过的
                Name = userName.Text,
                Age = Int32.Parse(userAge.Text),
                Verified = false   
            }; 

            //使用DataContractJsonDeSeriaLizer实现方式
            string json = ToJsonData(user);  //带参数的构造函数

            //string json = user.Stringify();//这个是构造自定义的类的，此处用不到

            info.Text = json;
            _appSettings.Values["UserDataKey"] = json; //存放到应用设置里面
            await new MessageDialog("保存成功").ShowAsync();
        }

private async void Get_Click(object sender, RoutedEventArgs e)
        {
            if (!_appSettings.Values.ContainsKey("UserDataKey"))
            {
                await new MessageDialog("未保存信息").ShowAsync();
                return;
            }
            string json = _appSettings.Values[UserDataKey].ToString();

            //反序列化为实体类对象
            User user = DataContractJsonSerializer<User>(json);

            //User user = new User(json);
            string userInfo = "";
            userInfo = "Id:" + user.Id + "Name:" + user.Name + "Age:" + user.Age;
            foreach (School school in user.Education)
            {
                userInfo += "Education:" + "Id:" + school.Id + "name:" + school.Name;
            }
            await new MessageDialog(userInfo).ShowAsync();
        }

private T DataContractJsonSerializer<T>(string jsonString)
        {
            var ds = new DataContractJsonSerializer(typeof(T));
            var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T obj = (T)ds.ReadObject(ms);
            ms.Dispose();
            return obj;
        }