/// <summary>
        /// get an instance of object
        /// </summary>
        /// <param name="myID"></param>
        public z_oficial_cia getObjectz_oficial_cia(System.Int32 myID)
        {
            z_oficial_cia myz_oficial_cia = new z_oficial_cia();
            CnxBase       myBase          = new CnxBase();
            string        reqSQL          = "SELECT id_oficial, id_voluntario, general FROM z_oficial_cia WHERE (id_oficial_cia=" + myID + ")";

            try
            {
                NpgsqlConnection myConn    = myBase.OpenConnection(myBase.cnxString);
                NpgsqlCommand    myCommand = new NpgsqlCommand(reqSQL, myConn);
                NpgsqlDataReader myReader  = myCommand.ExecuteReader();
                if (myReader.Read())
                {
                    myz_oficial_cia.id_oficial_cia = Convert.ToInt32(myReader[0]);
                    myz_oficial_cia.id_oficial     = Convert.ToInt32(myReader[1]);
                    myz_oficial_cia.id_voluntario  = Convert.ToInt32(myReader[2]);
                    myz_oficial_cia.general        = Convert.ToBoolean(myReader[3]);
                }
                myBase.CloseConnection(myConn);
            }
            catch (Exception myErr)
            {
                throw (new Exception(myErr.ToString() + reqSQL));
            }
            return(myz_oficial_cia);
        }
        /// <summary>
        /// add a record
        /// </summary>
        /// <param name="myID"></param>
        public void addz_oficial_cia(z_oficial_cia myz_oficial_cia)
        {
            CnxBase myBase = new CnxBase();
            string  reqSQL = "INSERT INTO z_oficial_cia (id_oficial, id_voluntario, general) VALUES (" + myz_oficial_cia.id_oficial + "," + myz_oficial_cia.id_voluntario + "," + myz_oficial_cia.general + ")";

            try
            {
                NpgsqlConnection myConn    = myBase.OpenConnection(myBase.cnxString);
                NpgsqlCommand    myCommand = new NpgsqlCommand(reqSQL, myConn);
                myCommand.ExecuteNonQuery();
                myBase.CloseConnection(myConn);
            }
            catch (Exception myErr)
            {
                throw (new Exception(myErr.ToString() + reqSQL));
            }
        }
        /// <summary>
        /// modify a record
        /// </summary>
        public void modifyz_oficial_cia(z_oficial_cia myz_oficial_cia)
        {
            CnxBase myBase = new CnxBase();
            string  reqSQL = "UPDATE z_oficial_cia SET id_oficial=" + myz_oficial_cia.id_oficial + ",id_voluntario=" + myz_oficial_cia.id_voluntario + ",general=" + myz_oficial_cia.general + " WHERE (id_oficial=" + myz_oficial_cia.id_oficial + ")";

            try
            {
                NpgsqlConnection myConn    = myBase.OpenConnection(myBase.cnxString);
                NpgsqlCommand    myCommand = new NpgsqlCommand(reqSQL, myConn);
                myCommand.ExecuteNonQuery();
                myBase.CloseConnection(myConn);
            }
            catch (Exception myErr)
            {
                throw (new Exception(myErr.ToString() + reqSQL));
            }
        }