void listaDoubleClick(object sender, MouseButtonEventArgs e)
        {
            ListBoxLista.UnselectAll();
            ListBoxLista.Items.Clear();
            ListBox listBox = (ListBox)sender;

            staraSciezka = textBoxSciezka.Text.Substring(0, textBoxSciezka.Text.LastIndexOfAny(new char[] { '\\', '/' }));
            if (staraSciezka.Length < 3)
            {
                staraSciezka = staraSciezka + "\\";
            }
            ListBoxLista.Items.Add("...");
            if (textBoxSciezka.Text.Length <= 3)
            {
                ListBoxLista.Items.Remove("...");
            }
            string nowasciezka = textBoxSciezka.Text;

            if (listBox.ToString() == "...")
            {
                string[,] foldery = PobFoldery(staraSciezka);
                for (int i = 0; i < foldery.Length / 2; i++)
                {
                    ListBoxLista.Items.Add(foldery[i, 0]);
                }
                string[,] pliki = PobPliki(staraSciezka);
                for (int i = 0; i < pliki.Length / 2; i++)
                {
                    ListBoxLista.Items.Add(pliki[i, 0]);
                }
            }
            else
            {
                string[,] foldery = PobFoldery(nowasciezka);
                for (int i = 0; i < foldery.Length / 2; i++)
                {
                    ListBoxLista.Items.Add(foldery[i, 0]);
                }
                string[,] pliki = PobPliki(nowasciezka);
                for (int i = 0; i < pliki.Length / 2; i++)
                {
                    ListBoxLista.Items.Add(pliki[i, 0]);
                }
            }

            sciezka = nowasciezka;
        }
        private void comboBoxDysk_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ListBoxLista.UnselectAll();
            ListBoxLista.Items.Clear();
            ComboBox comboBox = (ComboBox)sender;
            string   dysk     = (string)comboBoxDysk.SelectedItem;

            sciezka             = dysk;
            textBoxSciezka.Text = sciezka;
            string[,] foldery   = PobFoldery(sciezka);
            for (int i = 0; i < foldery.Length / 2; i++)
            {
                ListBoxLista.Items.Add(foldery[i, 0]);
            }
            string[,] pliki = PobPliki(sciezka);
            for (int i = 0; i < pliki.Length / 2; i++)
            {
                ListBoxLista.Items.Add(pliki[i, 0]);
            }
        }