how do perform json paring POST and GET method in windows phone 8?

using (HttpClient client = new HttpClient())
               {
                   pbWeather.Visibility = System.Windows.Visibility.Visible;
                   client.BaseAddress = new Uri("http://192.168.1.19/projects/t20lite/index.php/api/api/get_players?userid=1&deviceuniqueid=123&devicetime=456");
                   var url = "get_players?userid=1&deviceuniqueid=123&devicetime=456";

                   client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                   HttpResponseMessage response = await client.GetAsync(String.Format(url, txtCountryName.Text));

                   if (response.IsSuccessStatusCode)
                   {
                       var data = response.Content.ReadAsStringAsync();
                       var weatherdata = JsonConvert.DeserializeObject<PlayersInfo>(data.Result.ToString());

                       spWeatherInfo.DataContext = weatherdata;

                   }
                   pbWeather.Visibility = System.Windows.Visibility.Collapsed;
               }
           }