public int suaTuyen(TuyenXe tx)
{
foreach (DataRow row in dao.LoadTram(tx.Tram1).Rows)
{
tx.Tram1 = row["ID_Tram"].ToString();
}
foreach (DataRow row2 in dao.LoadTram(tx.Tram2).Rows)
{
tx.Tram2 = row2["ID_Tram"].ToString();
}
return(dao.SuaTuyen(tx));
}