private void ComputeMapBounds()
{
if (SearchBounds == null)
{
LocationRect tempBound = LocationService.ComputeLocationBounds(Category.GeoLocatedItems.Select((i) => i.GeoLocation));
MapBounds = new LocationRect(tempBound.Center, tempBound.Width * 1.2, tempBound.Height * 1.2);
}
}