public class Post
{
    public int Id { get; set; }

    public string Title { get; set; }

    public string Author { get; set; }
}
public class Blog
{
    public List<Post> Posts { get; set; }
}

public class BlogHandler : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
        context.Response.C;

        List<Post> posts = new List<Post>()
        {
            new Post{ Id=1, Title="一步一步学Silverlight 2系列（13）：数据与通信之WebRequest", Author="TerryLee" },
            new Post{ Id=2, Title="一步一步学Silverlight 2系列（12）：数据与通信之WebClient", Author="TerryLee" },
            new Post{ Id=3, Title="一步一步学Silverlight 2系列（11）：数据绑定", Author="TerryLee" },
            new Post{ Id=4, Title="一步一步学Silverlight 2系列（10）：使用用户控件", Author="TerryLee" },
            new Post{ Id=5, Title="一步一步学Silverlight 2系列（9）：使用控件模板", Author="TerryLee" },
            new Post{ Id=6, Title="一步一步学Silverlight 2系列（8）：使用样式封装控件观感", Author="TerryLee" }
        };

        Blog blog = new Blog();
        blog.Posts = posts;

        context.Response.Write(JavaScriptConvert.SerializeObject(blog));
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
    Uri endpoint = new Uri("http://localhost:8081/BlogHandler.ashx");

    WebRequest request = WebRequest.Create(endpoint);
    request.Method = "POST";
    request.C;
    request.BeginGetResponse(new AsyncCallback(ResponseReady), request);
}

void ResponseReady(IAsyncResult asyncResult)
{
    WebRequest request = asyncResult.AsyncState as WebRequest;
    WebResponse response = request.EndGetResponse(asyncResult);

    using (Stream responseStream = response.GetResponseStream())
    {
        DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Blog));

        Blog blog = jsonSerializer.ReadObject(responseStream) as Blog;

        Posts.ItemsSource = blog.Posts;
    }
}