getLocationName

    /// <summary>
        /// Get Location name by lat and long
        /// </summary>
        private async void getLocationName()
        {
            Geoposition geoposition = await getLocation(1);

            List<MapLocation> locations;
            ReverseGeocodeQuery query = new ReverseGeocodeQuery();
            query.GeoCoordinate = new GeoCoordinate(geoposition.Coordinate.Latitude, geoposition.Coordinate.Longitude);
            query.QueryCompleted += (s, e) =>
            {
                if (e.Error == null && e.Result.Count > 0)
                {
                    locations = e.Result as List<MapLocation>;

                    Model.LocationName = locations[0].Information.Address.Street;
                    // Do whatever you want with returned locations.
                    // e.g. MapAddress address = locations[0].Information.Address;
                }
            };
            query.QueryAsync();
        }