public void ConnectApplication()
 {
     _connector             = ComUtilities.CreateObject <BCOM.ApplicationObjectConnector>("MicroStationDGN.ApplicationObjectConnector");
     _application           = _connector.Application;
     _application.Visible   = true;
     _isExternalApplication = false;
 }
        public void Dispose()
        {
            ComUtilities.ReleaseComObject(_designFile);
            _designFile = null;

            if (_isExternalApplication == false)
            {
                ComUtilities.ReleaseComObject(_application);
                _application = null;
            }

            ComUtilities.ReleaseComObject(_connector);
            _connector = null;
        }