/// <summary>
        /// add a record
        /// </summary>
        /// <param name="myID"></param>
        public void Insert(est_consultas_cat myest_consultas_cat)
        {
            CnxBase myBase = new CnxBase();
            string  reqSQL = "INSERT INTO est_consultas_cat (nombre) VALUES ('" + myest_consultas_cat.nombre + "'" + ")";

            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 Update(est_consultas_cat myest_consultas_cat)
        {
            CnxBase myBase = new CnxBase();
            string  reqSQL = "UPDATE est_consultas_cat SET id_categoria=" + myest_consultas_cat.id_categoria + ",nombre='" + myest_consultas_cat.nombre + "' WHERE (id_categoria=" + myest_consultas_cat.id_categoria + ")";

            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>
        /// get an instance of object
        /// </summary>
        /// <param name="myID"></param>
        public est_consultas_cat getObjectest_consultas_cat(System.Int32 myID)
        {
            est_consultas_cat myest_consultas_cat = new est_consultas_cat();
            CnxBase           myBase = new CnxBase();
            string            reqSQL = "SELECT id_categoria,nombre FROM est_consultas_cat WHERE (id_categoria=" + myID + ")";

            try
            {
                NpgsqlConnection myConn    = myBase.OpenConnection(myBase.cnxString);
                NpgsqlCommand    myCommand = new NpgsqlCommand(reqSQL, myConn);
                NpgsqlDataReader myReader  = myCommand.ExecuteReader();
                if (myReader.Read())
                {
                    myest_consultas_cat.id_categoria = Convert.ToInt32(myReader[0]);
                    myest_consultas_cat.nombre       = myReader[1].ToString();
                }
                myBase.CloseConnection(myConn);
            }
            catch (Exception myErr)
            {
                throw (new Exception(myErr.ToString() + reqSQL));
            }
            return(myest_consultas_cat);
        }