Locate windows phone 7 (obtain latitude and longitude) and find the latitude and longitude location (city information)

 

 

I used the project a few days ago and posted the code to you.

/// <summary>
        /// Get the latitude and longitude of the current position
        /// </ summary>
        /// <returns> </ returns>

   public static double [] GetLocationProperty ()
        {
            double [] latLong = new double [2];

            GeoCoordinateWatcher watcher = new GeoCoordinateWatcher ();
            watcher.TryStart (false, TimeSpan.FromMilliseconds (1000));
            GeoCoordinate coord = watcher.Position.Location;

            if (coord.IsUnknown! = true)
            {
                latLong [0] = coord.Latitude;
                latLong [1] = coord.Longitude;
            }
            return latLong;


        }



 #region The distance between the two latitudes and longitudes
        private const double EARTH_RADIUS = 6378.137;
        private static double rad (double d)
        {
            return d * Math.PI / 180.0;
        }

        public static double GetDistance (double lat1, double lng1, double lat2, double lng2)
        {
            double radLat1 = rad (lat1);
            double radLat2 = rad (lat2);
            double a = radLat1-radLat2;
            double b = rad (lng1)-rad (lng2);
            double s = 2 * Math.Asin (Math.Sqrt (Math.Pow (Math.Sin (a / 2), 2) +
             Math.Cos (radLat1) * Math.Cos (radLat2) * Math.Pow (Math.Sin (b / 2), 2)));
            s = s * EARTH_RADIUS;
            s = Math.Round (s * 10000) / 10000;
            return s;
        }
        #endregion

// URL interface from Nokia map
public static Uri Get_CityNameOnMap (double slatitude, double slongitude)
        {
            string urlString = "http://loc.desktop.maps.svc.ovi.com/geocoder/rgc/1.0?" + "lat =" + slatitude + "& long =" + slongitude + "& output = json";
            return new Uri (urlString, UriKind.RelativeOrAbsolute);
        }