private void saveButton_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         using (pisModelDataContext cont = new pisModelDataContext())
         {
             var query = from c in cont.nalog_za_nabavus
                         where c.id == Convert.ToInt32(idBox.Text)
                         select c;
             foreach (var ord in query)
             {
                 ord.datum = Convert.ToDateTime(datumPicker.Text);
                 ord.vrijeme = vrijemeBox.Text;
             }
             cont.SubmitChanges();
         }
         stavkeNalogZaNabavu stavke = new stavkeNalogZaNabavu();
         stavke.idBoxx.Text = idBox.Text.ToString();
         iznos.tempNalogZaNabavuID = Convert.ToInt32(idBox.Text);
         //MessageBox.Show(iznos.TempnalogZaNabavuID.ToString());
         stavke.ShowDialog();
         this.Close();
     }
     catch (Exception ex)
     {
         MessageBox.Show("Dogodila se pogreška!!!" + ex.Message.ToString());
     }
     
 }
        private void saveButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                int id;
                using (pisModelDataContext cont = new pisModelDataContext())
                {
                    nalog_za_nabavu art = new nalog_za_nabavu
                    {
                        datum = Convert.ToDateTime(datumPicker.Text),
                        vrijeme = vrijemeBox.Text
                    };
                    cont.nalog_za_nabavus.InsertOnSubmit(art);
                    cont.SubmitChanges();
                    var entry = (from ee in cont.nalog_za_nabavus
                                 select ee).OrderByDescending(ee => ee.id).FirstOrDefault();
                    id = entry.id;
                    iznos.tempNalogZaNabavuID = id;
                }
                updateListBox();

                //MessageBox.Show(id.ToString());
                stavkeNalogZaNabavu stavke = new stavkeNalogZaNabavu();
                stavke.idBoxx.Text = id.ToString();
                //MessageBox.Show(iznos.tempID.ToString());
                stavke.ShowDialog();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Dogodila se pogreška!!!\n" + ex.Message.ToString());
            }
        }