Timer & Deferred Eval & GC

CompleteProgTrial.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;

namespace TimerDeferredEval
{
    class JobScheduler : IDisposable
    {
        private static readonly TimeSpan DueTime = new TimeSpan(0, 0, 0, 5);
        private static readonly TimeSpan Period = new TimeSpan(0, 24, 0);

        private readonly IEnumerable<TimerCallback> _jobs;
        private IEnumerable<Timer> _timers;

        public JobScheduler(IEnumerable<TimerCallback> jobs)
        {
            _jobs = jobs;
        }

        public  void Start()
        {


            _timers = _jobs.Select(job =>
                                       {
                                           Console.Error.WriteLine("Timer Created...");
                                           return new Timer(job, null, DueTime, Period);
                                       }); // Deferred Execution

            _timers.Count(); // Eager Evaluation

            Console.Error.WriteLine(_timers.GetType());
        }

        public void Dispose()
        {
            foreach (var timer in _timers)
            {
               timer.Dispose();
            } 
        }
    }

   

    class Program
    {
        static void Main(string[] args)
        {
            JobScheduler scheduler = new JobScheduler(new List<TimerCallback>{DoWorkOnTimer});
            scheduler.Start();
            GC.Collect();
            Thread.Sleep(10000);
            scheduler.Dispose();
        }

        static void DoWorkOnTimer(Object data)
        {
          Console.Error.WriteLine("Timer Fired...");   
        }

    }
}

TimerDeferredEval.cs

class JobScheduler : IDisposable
{
	private static readonly TimeSpan DueTime = new TimeSpan(0, 10, 0);
	private static readonly TimeSpan Period = new TimeSpan(0, 24, 0);
	private readonly IEnumerable<TimerCallback> _jobs;
	private IEnumerable<Timer> _timers;

	public JobScheduler(IEnumerable<TimerCallback> jobs) { _jobs = jobs;}

	public  void Start() {
		_timers = _jobs.Select(job => new Timer(job, null, DueTime, Period) }); // Loc 1.
		_timers.Count(); // Loc 2.  }

	public void Dispose() {
		foreach (var timer in _timers)  timer.Dispose(); // Loc 3.
	} 
}