private void btn_addInfo_Click(object sender, EventArgs e) { person = new DTO_Person_Notatry(); person.Name = txt_lastname.Text.Trim(); person.Id_code = txt_CMND.Text.Trim(); person.Address = txt_address.Text.Trim(); person.Phone = txt_phoneNumber.Text.Trim(); string data = bll.addPersonData(ref err, person.Name, person.Id_code, person.Address, person.Phone).ToString(); load_GridView(); }