Error getting Location in windows Phone

This is my code to get the location in Windows Phone SDK.

Geolocator geolocator = new Geolocator();
geolocator.DesiredAccuracyInMeters = 50;

try
{
    Geoposition geoposition = await geolocator.GetGeopositionAsync(maximumAge: TimeSpan.FromMinutes(5),timeout: TimeSpan.FromSeconds(10));

    LatitudeTextBlock.Text = geoposition.Coordinate.Latitude.ToString("0.00");
    LongitudeTextBlock.Text = geoposition.Coordinate.Longitude.ToString("0.00");
}
catch (Exception ex)
{
    if ((uint)ex.HResult == 0x80004004)
    {
        // the application does not have the right capability or the location master switch is off
        MessageBox.Show("location  is disabled in phone settings.");
    }
    //else
    {
        // something else happened acquring the location
    }
}

I am getting the following error.

The 'await' operator can only be used within an async lambda expression. Consider marking this lambda expression with the 'async' modifier.

Here try this code. The method you must add the keyword async

public string latitude, longitude;

 async private void GetLocation()
        {

        try
        {

            var geolocator = new Geolocator();

            if ((bool)IsolatedStorageSettings.ApplicationSettings["LocationConsent"] == true)
            {
                Geoposition position = await geolocator.GetGeopositionAsync();
                Geocoordinate coordinate = position.Coordinate;

                latitude = Convert.ToString(Math.Round(coordinate.Latitude, 2));
                longitude = Convert.ToString(Math.Round(coordinate.Longitude, 2));
            }
            else
            {


                MessageBox.Show("Please enable location services to use this feature. You can turn it on from Settings.");

            }

        }
        catch (Exception)
        {

        }
    }

Hope this helps! :)