using System;

namespace System.Threading
{
    static class Monitor
    {
        public static void Enter(object obj, ref bool locked)
        {
            locked = true;
            Console.WriteLine("Enter");
        }
        public static void Exit(object obj)
        {
            Console.WriteLine("Exit");
        }
    }
}

namespace MonitorEnterTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var syncRoot = new object();
            lock (syncRoot)
            {

            }

            Console.WriteLine("Press any key!!!");
            Console.ReadKey();
        }
    }
}