public PaymentDTO FindPaymentById(int id)
        {
            string query = "Select * from payment where id=@id";
            List <KeyValuePair <string, string> > parameters = new List <KeyValuePair <string, string> >();

            parameters.Add(new KeyValuePair <string, string>("id", id.ToString()));

            DataSet    results = ExecuteQuery(query, parameters);
            PaymentDTO p       = new PaymentDTO();

            if (results != null && results.Tables[0].Rows.Count > 0)
            {
                p = DataSetParser.DataSetToPayment(results, 0);
            }
            return(p);
        }
        public List <PaymentDTO> GetAllPayments()
        {
            string query = "Select * from payment";
            List <KeyValuePair <string, string> > parameters = new List <KeyValuePair <string, string> >();
            DataSet results = ExecuteQuery(query, parameters);

            List <PaymentDTO> payments = new List <PaymentDTO>();

            if (results != null)
            {
                for (int x = 0; x < results.Tables[0].Rows.Count; x++)
                {
                    PaymentDTO p = DataSetParser.DataSetToPayment(results, x);
                    payments.Add(p);
                }
            }
            return(payments);
        }