数据绑定反序列化json数组

我对c#、silverlight和整个数据绑定范例都比较陌生。我一直在做一个小的测试应用程序，通过他们的API使用Json.Net从reddit提取数据。无论如何，我可以很好地将数据放入应用程序，但现在我在将数据放入UI时遇到了麻烦。我尝试了几种不同的配置，但都无济于事。无论如何，代码在这里:

public partial class MainPage : PhoneApplicationPage
{
    string json = "";
    RootObject topic { get; set; }
    public MainPage()
    {
        InitializeComponent();
    }
    private void button1_Click(object sender, RoutedEventArgs e)
    {
        textBlock1.Text = "Retrieving...";
        string url = @"http://www.reddit.com/r/all.json";
        HttpWebRequest hWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
        hWebRequest.Method = "GET";
        hWebRequest.BeginGetResponse(Response_Completed, hWebRequest);
    }
    public void Response_Completed(IAsyncResult result)
    {
        HttpWebRequest request = (HttpWebRequest)result.AsyncState;
        HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result);
        using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
        {
            json = streamReader.ReadToEnd();
            topic = JsonConvert.DeserializeObject<RootObject>(json);
        }
        Deployment.Current.Dispatcher.BeginInvoke(() =>
        {
            this.DataContext = topic.data.children[0].data.title;
            textBlock1.Text = "Done.";
        });
    }

这是我代码的主要部分。剩下的类在这里，它们用于reddit API提供的JSON的反序列化。

public class MediaEmbed
    {
        public string content { get; set; }
        public int? width { get; set; }
        public bool? scrolling { get; set; }
        public int? height { get; set; }
    }
    public class Oembed
    {
        public string provider_url { get; set; }
        public string description { get; set; }
        public string title { get; set; }
        public string url { get; set; }
        public string author_name { get; set; }
        public int height { get; set; }
        public int width { get; set; }
        public string html { get; set; }
        public int thumbnail_width { get; set; }
        public string version { get; set; }
        public string provider_name { get; set; }
        public string thumbnail_url { get; set; }
        public string type { get; set; }
        public int thumbnail_height { get; set; }
        public string author_url { get; set; }
    }
    public class Media
    {
        public string type { get; set; }
        public Oembed oembed { get; set; }
    }
    public class Data2
    {
        public string domain { get; set; }
        public MediaEmbed media_embed { get; set; }
        public object levenshtein { get; set; }
        public string subreddit { get; set; }
        public string selftext_html { get; set; }
        public string selftext { get; set; }
        public object likes { get; set; }
        public bool saved { get; set; }
        public string id { get; set; }
        public bool clicked { get; set; }
        public string title { get; set; }
        public Media media { get; set; }
        public int score { get; set; }
        public bool over_18 { get; set; }
        public bool hidden { get; set; }
        public string thumbnail { get; set; }
        public string subreddit_id { get; set; }
        public string author_flair_css_class { get; set; }
        public int downs { get; set; }
        public bool is_self { get; set; }
        public string permalink { get; set; }
        public string name { get; set; }
        public double created { get; set; }
        public string url { get; set; }
        public string author_flair_text { get; set; }
        public string author { get; set; }
        public double created_utc { get; set; }
        public int num_comments { get; set; }
        public int ups { get; set; }
    }
    public class Child
    {
        public string kind { get; set; }
        public Data2 data { get; set; }
    }
    public class Data
    {
        public string modhash { get; set; }
        public Child[] children { get; set; }
        public string after { get; set; }
        public object before { get; set; }
    }
    public class RootObject
    {
        public string kind { get; set; }
        public Data data { get; set; }
    }       
}

假设XAML UI是这样的

            <ListBox>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBlock x:Name="TitleInfo" />
                        <TextBlock x:Name="AuthorInfo" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

标题包含在RootObject的实例topic中。抓取标题的方法是

topic.data.children[0].data.title;

然而，我几乎不知道如何将其绑定到这些文本框或列表框..我知道必须设置数据上下文，这些项目可以通过代码绑定，而不是xaml，但我不能想出任何优雅的方法来做到这一点。任何帮助吗?谢谢。