Владимир Коротенко

private static bool _running;
            public static void Main()
            {
                _running = true;
                ThreadPool.SetMaxThreads(5, 5);
                ThreadPool.QueueUserWorkItem(ThreadProc);

                while (_running)
                {
                    Thread.Sleep(100);
                }

            }
            static void ThreadProc(object stateInfo)
            {
                var start = DateTime.Now;
                var proxy = GetProxy();
                try
                {
                    var id = GetNextId();
                    var result = proxy.Execute(id);
                }
                catch (Exception e)
                {
                    _running = false;
                }

                var ts = DateTime.Now - start;
                var delay = (int)(2 * 1000 - ts.TotalMilliseconds);
                if (delay > 0)
                    Thread.Sleep(delay);
            }

[Serializable]
    public class FilmShow
    {
        [Serializable]
        public class Place
        {
            public Place() { }
            public int? UserId { get; set; }
            public bool IsReserved { get; set; }
        }
        [Serializable]
        public class Row
        {
            public Row() { }
            public Place[] Places { get; set; }
        }
        public DateTime Date { get; set; }
        public string Name { get; set; }
        public Row[] Rows { get; set; }

        public FilmShow()
        {
        }

        public FilmShow(DateTime date, string name, int row, int column)
        {
            Date = date;
            Name = name;
            Rows = new Row[row];
            for (var i = 0; i < Rows.Length; i++)
            {
                var item = new Row() { Places = new Place[column] };
                for (var j = 0; j < item.Places.Length; j++)
                {
                    item.Places[j] = new Place();
                }
                Rows[i] = item;
            }
        }

        public static void Save(FilmShow filmShow, string path)
        {
            var formatter = new XmlSerializer(typeof(FilmShow));
            using var fs = new FileStream(path, FileMode.OpenOrCreate);
            formatter.Serialize(fs, filmShow);
        }

        public static FilmShow Load(string path)
        {
            var formatter = new XmlSerializer(typeof(FilmShow));
            using var fs = new FileStream(path, FileMode.OpenOrCreate);
            return (FilmShow)formatter.Deserialize(fs);
        }
    }