public static bool addNonCashBenefit(NonCashBenefit ncb)
        {
            DBConnector dbcon = new DBConnector();

            if (dbcon.openConnection())
            {
                MySqlCommand cmd = new MySqlCommand();
                cmd.CommandText = "INSERT INTO noncash_benefit (approved_benefit, date_issued, amount, price, employee_idemployee) VALUES (N'" + ncb.approved_benefit + "', '" + ncb.getdate_issued().ToString("yyyy-MM-dd") + "', " + ncb.amount + ", " + ncb.price + ", " + Employee.employee_id + ")";
                cmd.Connection = dbcon.connection;
                cmd.Prepare();
                cmd.ExecuteNonQuery();

                dbcon.closeConnection();
                return true;
            }
            else
            {
                dbcon.closeConnection();
                return false;
            }
        }
        public static bool updateNonCashBenefit(NonCashBenefit ncb)
        {
            DBConnector dbcon = new DBConnector();

            if (dbcon.openConnection())
            {

                MySqlCommand cmd = new MySqlCommand();
                cmd.CommandText = "UPDATE noncash_benefit SET approved_benefit=N'" + ncb.approved_benefit + "', date_issued='" + ncb.getdate_issued().ToString("yyyy-MM-dd") + "', amount=" + ncb.amount + ", price=" + ncb.price + " WHERE employee_idemployee=" + Employee.employee_id + " AND idnoncash_benefit=" + ncb.ncb_id;
                cmd.Connection = dbcon.connection;
                cmd.Prepare();
                cmd.ExecuteNonQuery();

                dbcon.closeConnection();

                return true;
            }
            else
            {

                return false;
            }
        }