private void datagridDelivered_SelectionChanged(object sender, SelectionChangeEventArgs e) { listDoses.Items.Clear(); if (this.datagridDelivered.SelectedItem != null) { Pom zahtjev = this.datagridDelivered.SelectedItem as Pom; btnDecline.Visibility = Visibility.Hidden; btnDeliver.Visibility = Visibility.Hidden; List <Isporuka> isporuka = JsonConvert.DeserializeObject <List <Isporuka> >(REST.GetIsporuka(zahtjev.ZahtjevIdd)); List <DozaKrvi> doza = JsonConvert.DeserializeObject <List <DozaKrvi> >(REST.GetDoza(isporuka[0].IsporukaId)); for (int i = 0; i < doza.Count; i++) { listDoses.Items.Add(doza[i].DozaKrviId); } } }