C# WinApp ช่วยดูโค้ดหน่อยครับ ว่าตกลงแบบนี้มันรันพร้อนกันรึปล่าว

void Task_Class_1_0_2()
        {
            clsCountDown.Srat();

            List<Task> TaskList = new List<Task>();
            
            System.IO.Directory.GetDirectories(@"C:\Program Files").ToList<string>().ForEach(d =>
            {
                Task t = new Task( () =>{
                    System.IO.Directory.GetFiles(d, "*.*", System.IO.SearchOption.TopDirectoryOnly).ToList<string>().ForEach(f =>
                    {
                        richTextBox1.WriteLine("AddFile: {0} ", f);
                    });});
                t.Start();
                TaskList.Add(t);
            });


            int index = Task.WaitAny(TaskList.ToArray());
            foreach (Task t in TaskList)
                Console.WriteLine("Task {0} Status: {1}", t.Id, t.Status);
            this.Write("Finished:{0}", clsCountDown.Final);
        }

class rectime { int id; DateTime st; DateTime en; }
void Task_Class_1_0_2()
{
	clsCountDown.Srat();
	List<Task> TaskList = new List<Task>();	
	List<rectime> TimeList = new List<rectime>();
	int TimeID = 0;
		
	System.IO.Directory.GetDirectories(@"C:\Program Files").ToList<string>().ForEach(d =>
	{		
		Task t = new Task( (id) =>{
			rectime rt = new rectime();
			rt.id=id;
			rt.st = new DateTime(); // add time start
			System.IO.Directory.GetFiles(
				d, "*.*", 
				System.IO.SearchOption.TopDirectoryOnly).ToList<string>()
				.ForEach(f =>{ richTextBox1.WriteLine("AddFile: {0} ", f); });					
			rt.en = new DateTime();  // add end time
			TimeList.Add(rt); 
		});
		t.Start(TimeID);		
		TaskList.Add(t);
		TimeID++; // เพิ่ม index
	});
	int index = Task.WaitAny(TaskList.ToArray()); // รอจนงานเสร็จ
	foreach (rectime t in TimeList){
		Console.WriteLine(
			"Task {0} Start: {1}  End: {2} ", 
			t.Id, t.st, t.en
		);
		this.Write("Finished:{0}", clsCountDown.Final);
	}
}