无法从url windows phone 8.1加载json

Question

private void Button_Click(object sender, RoutedEventArgs e)
{
    Debug.WriteLine("at login");

    var promise = GetWebStringAsync("http://api.myjson.com/bins/2hxei");
    // do something else if needed
    var jsonData = promise.Result;

    Debug.WriteLine("exitting login");
}

public static async Task<string> GetWebStringAsync(string url)
{
    using ( var client = new HttpClient() )
    {
        Debug.WriteLine("at http client");
        Uri uri = new Uri(url, UriKind.Absolute);
        var stringTask = await client.GetStringAsync(uri);
        Debug.WriteLine("exitting client");
        return stringTask;
    }
}

输出显示了一堆异常。你可以看到输出here。

程序行为：我在设备上运行应用程序，然后单击手机挂起的按钮。