private void JurassicWorld(object sender, EventArgs e)
        {
            jurassic.BackColor = Color.Yellow;
            st.ReservedSeats.Add(jurassic);
            var stForm = new st();

            stForm.Show();
        }
        private void Startbatman(object sender, EventArgs e)
        {
            bat.BackColor = Color.Yellow;
            st.ReservedSeats.Add(bat);
            var stForm = new st();

            stForm.Show();
        }
        private void HarryPotter(object sender, EventArgs e)
        {
            potter.BackColor = Color.Yellow;
            st.ReservedSeats.Add(potter);
            var stForm = new st();

            stForm.Show();
        }
        private void enterzal3(object sender, EventArgs e)
        {
            var stForm = new st();

            stForm.Show();
        }