private void load_data_2_grid()
{
US_GD_CONG_TAC v_us_dung_chung = new US_GD_CONG_TAC();
DataSet v_op_ds = new DataSet();
v_op_ds.Tables.Add();
v_us_dung_chung.BAO_CAO(v_op_ds);
m_trl_bao_cao.KeyFieldName = "ID";
m_trl_bao_cao.ParentFieldName = "ID_DON_VI_CAP_TREN";
m_trl_bao_cao.DataSource = v_op_ds.Tables[0];
m_trl_bao_cao.ExpandAll();
}