public static bool WithinLatitudeAndLongitude(double dLatitude, double dLongitude, double dLatitude2, double dLongitude2, double dRatioInMiles)
 {
     if (Geography.CalcDistance(dLatitude, dLongitude, dLatitude2, dLongitude2) <= dRatioInMiles)
         return true;
     return false;
 }