无法将JSON数据绑定到windowsphone 8中的列表

我是手机开发的新手，当我将JSON数据绑定到c#中的列表框时，我会得到一个空白屏幕，我的列表没有被填充，我成功地从web服务获得了JSON响应，我的代码如下

 public void callbackwall(object sender, UploadStringCompletedEventArgs e)
    {
        string json = e.Result.ToString();
        if (!string.IsNullOrEmpty(json))
        {
            var example = JsonConvert.DeserializeObject<List<listreadqueries>>(json);
            ServerList.ItemsSource = example;
         }
        }

    public class readqueriesObject
    {
        public string customer_read_status { get; set; }
        public string description { get; set; }
        public string Inserted_Date { get; set; }
        public string Query_From_Id { get; set; }
        public string Query_From_Name { get; set; }
        public string Query_Id { get; set; }
        public string Query_Status { get; set; }
        public string Query_To_Id { get; set; }
        public string Query_To_Name { get; set; }
        public string title { get; set; }
        public int count { get; set; }
        public List<object> historyList { get; set; }
        public string Query_Type { get; set; }
    }
    public class listreadqueries
    {
        public List<readqueriesObject> queries { get; set; }
    }
}

}

我得到的JSON响应是[{"customer_read_status":"read","description":"Maecenas nec elit metus. Donec porttitor porttitor felis vitae hendrerit. Sed a interdum magna amet.'r'n","Inserted_Date":"Aug 14, 2013 at 01:22"},{....},{..}]

我的XAML代码如下

                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Margin="0,0,0,20" Width="300">
                            <TextBlock Text="{Binding Path=description}" />
                        </StackPanel>
                    </DataTemplate>
                </ListBox.ItemTemplate>

var example = JsonConvert.DeserializeObject<List<readqueriesObject>>(json);