private DataSet load_data_2_ds_dm_loai_ngay_cong(DataSet v_ds_dm_loai_ngay_cong)
{
US_DUNG_CHUNG v_us = new US_DUNG_CHUNG();
DataSet v_ds_ = new DataSet();
v_ds_dm_loai_ngay_cong.Tables.Add(new DataTable());
v_us.FillDatasetWithQuery(v_ds_dm_loai_ngay_cong, "select ID AS ID_LOAI_NGAY_CONG, MA_NGAY_CONG, TEN_NGAY_CONG FROM DM_LOAI_NGAY_CONG");
return v_ds_dm_loai_ngay_cong;
}