void WyczyscCombo()
 {
     for (int i = 1; i <= 4; i++)
     {
         ComboBox c = (ComboBox)Wybor.FindName("combo" + i.ToString());
         c.Items.Clear();
     }
 }
 void UzupelnijAutorow(string s)
 {
     foreach (Autor a in page.GetLista())
     {
         if (a.coPisze == s)
         {
             for (int i = 1; i <= 4; i++)
             {
                 ComboBox c = (ComboBox)Wybor.FindName("combo" + i.ToString());
                 c.Items.Add(a.Imie + " " + a.Nazwisko);
             }
         }
     }
 }
        //dostosowywanie widoku okna do wybranych opcji przez użytkownika
        private void Ilu_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            TextBox  t, t1;
            ComboBox c;

            if (typy.SelectedIndex == 0 || typy.SelectedIndex == 1)
            {
                for (int i = 1; i <= 4; i++)
                {
                    c = (ComboBox)Wybor.FindName("combo" + i.ToString());
                    if (i <= Int32.Parse(Ilu.SelectedItem.ToString()))
                    {
                        c.Visibility = Visibility.Visible;
                    }
                    else
                    {
                        c.Visibility = Visibility.Hidden;
                    }
                }
            }
            else
            {
                i.Visibility = Visibility.Visible;
                n.Visibility = Visibility.Visible;

                for (int i = 1; i < 9; i += 2)
                {
                    t = (TextBox)Panel.FindName("autor" + i.ToString());
                    int x = i + 1;
                    t1 = (TextBox)Panel.FindName("autor" + x.ToString());

                    if (i <= Int32.Parse(Ilu.SelectedItem.ToString()) * 2)
                    {
                        t.Visibility  = Visibility.Visible;
                        t1.Visibility = Visibility.Visible;
                    }
                    else
                    {
                        t.Visibility  = Visibility.Hidden;
                        t1.Visibility = Visibility.Hidden;
                    }
                }
            }
        }