Questione giuridica chiave
Whether the cantonal court violated the right to be heard by not applying Art. 19 LEx/VS ex officio based on the municipality's 1998 letter.
Decisione estratta
No. The appeal to the cantonal court did not invoke Art. 19 LEx/VS or claim the letter was a formally binding expropriator's offer, so the court had no duty to examine that question on its own.
Motivazione estratta
The right to be heard does not require a court to investigate an unraised legal theory ex officio when the party merely mentions a letter without framing it as a legally relevant offer under the expropriation statute.