private DataTable load_data_to_ma_hd() { US_GD_HOP_DONG v_us = new US_GD_HOP_DONG(); DS_GD_HOP_DONG v_ds_hd = new DS_GD_HOP_DONG(); v_us.FillDataset(v_ds_hd); return v_ds_hd.Tables[0]; }