private DataSet load_data_2_cm_dm_tu_dien(int m_id_vt) { DS_CM_DM_TU_DIEN v_ds = new DS_CM_DM_TU_DIEN(); US_CM_DM_TU_DIEN v_us = new US_CM_DM_TU_DIEN(); v_us.FillDatasetByIdLoaiTuDien(v_ds, m_id_vt); return v_ds; }