private void store(OleDbConnection cn, string material, ConcreteDesignProps props) { string isLW = (props.IsLightweightConcrete) ? "Yes" : "No"; string sql = "INSERT INTO [Material Properties 04 - Design Concrete] " + "(Material, Fc, RebarFy, RebarFys, LtWtConc, LtWtFact) VALUES " + "(\"" + material + "\", " + props.Fc + ", " + props.RebarFy + ", " + props.RebarFys + ", \"" + isLW + "\", " + props.LightweightFactor + ");"; new OleDbCommand(sql, cn).ExecuteNonQuery(); }