private void Add_Movie_Button_Click(object sender, EventArgs e)
        {
            Manage_Theater Manage_Theater = new Manage_Theater();

            Manage_Theater.Show();
            this.Hide();
        }
        private void Manage_Theater_Panel_Click(object sender, EventArgs e)
        {
            Manage_Theater Manage_Theater = new Manage_Theater();

            Manage_Theater.Show();
            this.Hide();
        }