public string location2(double _lon,double _lat)
        {
            string m_str = "--------------";
            try
            {
                bool _is = BlueBaseIsAvailable();
                if (_is==true )
                {
                    Geocode _geo = new Geocode("KRoads", " major_townsutm", this.bConn, _lon, _lat);
                    m_str = _geo.getAddress()+_geo.getRoadName();

                }
                return m_str;

            }
            catch(System.Exception zx)
            {return m_str;}
        }