How to get a value of setting "gps location enabled" in windows phone?

While my app is working - I need to check, that GPS-location is on. I DO NOT need any complex things with statusChanged and other - just check a value of setting.

If that setting is off - I must stop execute current operation. I got one method, which called every time, when user execute operation. And I wanna place check rule there. So - it must be fast and cheap.

Is there any human way? Without keeping GPSWatcher ON all the time, and check his last status. I must care about battery.

Thanks.

You can use this:

Geolocator geolocator = new Geolocator();

if (geolocator.LocationStatus == PositionStatus.Disabled)
{
    ...
}