private void btnListeleSeans_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            SeansService s = new SeansService();

            foreach (var item in s.ListeleSeans())
            {
                listBox1.Items.Add(item.SeansSaat);
            }
        }
        private void btnEkleSeans_Click(object sender, EventArgs e)
        {
            SeansService s    = new SeansService();
            SeansEkleDTO dt   = new SeansEkleDTO();
            Film         temp = (Film)comboBoxFilm.SelectedItem;

            dt.FilmID      = temp.FilmID;
            dt.KacinciSaat = (int)(numericUpDownSaat.Value);
            s.EkleYap(dt);
        }