private void save_data()
{
decimal ip_id_dc_nv = CIPConvert.ToDecimal(m_sle_chon_nhan_vien.EditValue);
US_GD_LOAI_LAO_DONG v_us_gd_loai_lao_dong = new US_GD_LOAI_LAO_DONG(ip_id_dc_nv);
v_us_gd_loai_lao_dong.dcID_LOAI_LAO_DONG = CIPConvert.ToDecimal(m_sle_chon_loai_lao_dong.EditValue);
v_us_gd_loai_lao_dong.datNGAY_BAT_DAU = m_dat_ngay_bat_dau.Value.Date;
v_us_gd_loai_lao_dong.datNGAY_KET_THUC = m_dat_ngay_ket_thuc.Value.Date;
v_us_gd_loai_lao_dong.BeginTransaction();
v_us_gd_loai_lao_dong.Update();
v_us_gd_loai_lao_dong.CommitTransaction();
}