static void Main(string[] args)

         {

             ThreadPool.SetMaxThreads(, );

             object locker = new object();

             const int TaskCount = ;

             Task main = Task.Run(() =>

             {

                 var mainTid = Thread.CurrentThread.ManagedThreadId;

                 Console.WriteLine("Main TID:{0}", mainTid);

                 Thread.Sleep();

                 Task[] tasks = new Task[TaskCount];

                 for (int i = ; i < TaskCount; i++)

                 {

                     tasks[i] = Task.Run(() =>

                     {

                         var tid = Thread.CurrentThread.ManagedThreadId;

                         lock (locker)

                         {

                             if (mainTid == tid)

                                 Console.ForegroundColor = ConsoleColor.Red;

                             Console.WriteLine(tid);

                             if (mainTid == tid)

                                 Console.ForegroundColor = ConsoleColor.Gray;

                         }

                         Thread.Sleep();

                     });

                 }

                 Task.WaitAll(tasks);

             });

             main.Wait();

         }