private void delete_gd_he_so_lns(decimal v_id_hop_dong)
{
US_GD_HE_SO_LNS v_us = new US_GD_HE_SO_LNS();
DS_GD_HE_SO_LNS v_ds = new DS_GD_HE_SO_LNS();
v_us.FillDataset(v_ds, "where id_hop_dong = " + v_id_hop_dong);
for (int i = 0; i < v_ds.Tables[0].Rows.Count; i++)
{
decimal v_id_gd_lns = Convert.ToDecimal(v_ds.Tables[0].Rows[i]["ID"]);
v_us = new US_GD_HE_SO_LNS(v_id_gd_lns);
v_us.Delete();
}
}