GetLastKnownLocationAsync();
        GetLocationAsync();
        GetLocationAsync(GeolocationRequest request);
        GetLocationAsync(GeolocationRequest request, CancellationToken cancelToken);
        

We will use GetLocationAsync in this example. This function will coordinates using device GPS.

      var location = await Geolocation.GetLocationAsync();
                    if (location != null)
                    {
                              double _log = location.Longitude;
                     double _lat = location. Latitude;
                    }