C# 自动将数据绑定到grid.textblock

我的问题是，我不知道如何在windows phone 8中绑定数据，情况是：-

我从服务器请求数据，得到响应后，我将它们显示在网格和列表框中（如表格）。
在这里之前，在我完成display函数之后，一切都很好，有一个新函数用于检索最后一个请求的更新

这是我的问题：
当我收到新数据时，我不知道如何将新数据绑定到同一个旧表。
例如：第一个请求是返回黄金价格1500$-->我在表中显示--->然后是新请求-->更新函数返回黄金的新价格为1502$。
如何在应用程序运行时用新价格更新具有gold price textblock的所需行

这是第一个请求：-

public ObservableCollection<Data> DataReceivedCollection { get; set; }

private void FireRequest2()
    {

        var request = HttpWebRequest.Create(new Uri("http://74.54.46.178/vertexweb10/webservice.svc/getallsymbols?AccountID=1122336675")) as HttpWebRequest;
        request.Method = "GET";
        request.CookieContainer = cookieJar;
        request.BeginGetResponse(ar =>
        {
            HttpWebRequest req2 = (HttpWebRequest)ar.AsyncState;
            using (var response = (HttpWebResponse)req2.EndGetResponse(ar))
            {
                using (Stream stream = response.GetResponseStream())
                {
                    using (var reader = new StreamReader(stream))
                    {
                        var outerRoot1 = JsonConvert.DeserializeObject<OuterRootObject1>(reader.ReadToEnd());
                        JArray jsonArray = JArray.Parse(outerRoot1.d);
                        JToken jsonArray_Item = jsonArray.First;
                        while (jsonArray_Item != null)
                        {

                            string Name = jsonArray_Item.Value<string>("Name");
                            string Bid = jsonArray_Item.Value<string>("Bid");
                            string Ask = jsonArray_Item.Value<string>("Ask");
                            string ID = jsonArray_Item.Value<string>("ID");



                            DataReceivedCollection = new ObservableCollection<Data>();


                            DispatchInvoke(() =>
                            {
                                myList.ItemsSource = DataReceivedCollection;
                                // and to add data you do it like this:
                                DataReceivedCollection.Add(new Data() { symid = ID, textFirst = Name, textSecond = Bid, textThird = Ask });


                            }
);

                            //Be careful, you take the next from the current item, not from the JArray object.
                            jsonArray_Item = jsonArray_Item.Next;
                        }



                    }
                }

            }

        }, request);
    }

---

您的dataReceived集合需要这样声明，因为它是绑定的主题

    public ObservableCollection<Data> DataReceivedCollection { get; set; } 

执行这些操作将确保绑定引擎获得填充列表框所需的信息

这只是一个开始，会给你一些更好的结果。正如评论中提到的，您的下一个停靠港是研究INotifyPropertyChanged

public class Data : INotifyPropertyChanged
    {
        private string _textFirst;
        public string textFirst
        {
            [DebuggerStepThrough]
            get { return _textFirst; }
            [DebuggerStepThrough]
            set
            {
                if (value != _textFirst)
                {
                    _textFirst = value;
                    OnPropertyChanged("textFirst");
                }
            }
        }
        private string _textSecond;
        public string textSecond
        {
            [DebuggerStepThrough]
            get { return _textSecond; }
            [DebuggerStepThrough]
            set
            {
                if (value != _textSecond)
                {
                    _textSecond = value;
                    OnPropertyChanged("textSecond");
                }
            }
        }

        private string _textThird;
        public string textThird
        {
            [DebuggerStepThrough]
            get { return _textThird; }
            [DebuggerStepThrough]
            set
            {
                if (value != _textThird)
                {
                    _textThird = value;
                    OnPropertyChanged("textThird");
                }
            }
        }

        private string _symid;
        public string symid
        {
            [DebuggerStepThrough]
            get { return _symid; }
            [DebuggerStepThrough]
            set
            {
                if (value != _symid)
                {
                    _symid = value;
                    OnPropertyChanged("symid");
                }
            }
        }
        #region INotifyPropertyChanged Implementation
        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(string name)
        {
            var handler = System.Threading.Interlocked.CompareExchange(ref PropertyChanged, null, null);
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(name));
            }
        }
        #endregion
    }

    public ObservableCollection<Data> DataReceivedCollection { get; set; } 

        DataReceivedCollection = new ObservableCollection<Data>();

public class Data : INotifyPropertyChanged
{
    private string _textFirst;
    public string TextFirst
    {
        [DebuggerStepThrough]
        get { return _textFirst; }
        [DebuggerStepThrough]
        set
        {
            if (value != _textFirst)
            {
                _textFirst = value;
                OnPropertyChanged("TextFirst");
            }
        }
    }
    private string _textSecond;
    public string TextSecond
    {
        [DebuggerStepThrough]
        get { return _textSecond; }
        [DebuggerStepThrough]
        set
        {
            if (value != _textSecond)
            {
                _textSecond = value;
                OnPropertyChanged("TextSecond");
            }
        }
    }
    #region INotifyPropertyChanged Implementation
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string name)
    {
        var handler = System.Threading.Interlocked.CompareExchange(ref PropertyChanged, null, null);
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(name));
        }
    }
    #endregion
}