private void form_to_us_quyet_dinh() { m_us.strMA_QUYET_DINH = m_txt_ma_quyet_dinh.Text; m_us.datNGAY_KY = m_dat_ngay_ky.Value; m_us.datNGAY_CO_HIEU_LUC = m_dat_ngay_co_hieu_luc_qd.Value; if (m_dat_ngay_het_hieu_luc_qd.Checked) { m_us.datNGAY_HET_HIEU_LUC = m_dat_ngay_het_hieu_luc_qd.Value; } else { m_us.SetNGAY_HET_HIEU_LUCNull(); } m_us.strNOI_DUNG = m_txt_noi_dung.Text; }