Trafic-Imagine

//find location in gps xong roi . . .
string search_string = Convert.ToString(geoposition.Coordinate.Lat...)+","+Convert.ToString(geoposition.Coordinate.Lon...)
string link1 = "http://127.0.0.1/phoneserver/traficjam.php?local=" + search_string;
                        HttpClient httpClient1 = new HttpClient();
                        string HTMLCode1 = await httpClient1.GetStringAsync(link1);

                        if (HTMLCode1 == "1" || HTMLCode1 == "")
                        {
                           MessageDialog msgbox = new MessageDialog("Find location fail! or locaiton not exist");
                            await msgbox.ShowAsync();
                       }
                        else
                        {// khuc nay moi ne` -----------------------------

                            List<double> lat = new List<double>();
                            List<double> lon = new List<double>();
                            List<string> time = new List<string>();
                            string code = HTMLCode1;

                            while (code.IndexOf("|") > 0)
                            {
                                lat.Add(double.Parse(code.Substring(0, code.IndexOf("_"))));
                                lon.Add(double.Parse(code.Substring(code.IndexOf("_") + 1, code.IndexOf("=") - code.IndexOf("_") - 1)));
                                time.Add(Convert.ToString(code.Substring(code.IndexOf("=") + 1, code.IndexOf("|") - code.IndexOf("=") - 1)));
                                code = code.Substring(code.IndexOf("|") + 1, code.Length - code.IndexOf("|") - 1);
                            }
                            for (int j = 0; j < lat.Count; j++)
                            {
                                var trafic = new Geopoint(new BasicGeoposition() { Latitude = lat[j], Longitude = lon[j] });
                                if (time[j] != "needhelp")
                                {
                                    setPositionIcon(trafic, "ms-appx:///Assets/pin.png", "Have " + time[j] + " say trafic jam.");// hien icon traficjam
                                }
                                else
                                {
                                    setPositionIcon(trafic, "ms-appx:///Assets/SplashScreen.scale-240.png", "Help someone in here!");// hien icon need help!
                                }
                            }

                        }
//roi TrySetViewAsync