C# : Monitor - Wait,Pulse,PulseAll

Simple recipe for use of Monitor.Wait and Monitor.Pulse. It consists of a worker, a boss, and a phone they use to communicate:

object phone = new object();

A "Worker" thread:

lock(phone) // Sort of "Turn the phone on while at work"
{
    while(true)
    {
        Monitor.Wait(phone); // Wait for a signal from the boss
        DoWork();
        Monitor.PulseAll(phone); // Signal boss we are done
    }
}

A "Boss" thread:

PrepareWork();
lock(phone) // Grab the phone when I have something ready for the worker
{
    Monitor.PulseAll(phone); // Signal worker there is work to do
    Monitor.Wait(phone); // Wait for the work to be done
}

More complex examples follow...

A "Worker with something else to do":

lock(phone)
{
    while(true)
    {
        if(Monitor.Wait(phone,1000)) // Wait for one second at most
        {
            DoWork();
            Monitor.PulseAll(phone); // Signal boss we are done
        }
        else
            DoSomethingElse();
    }
}

An "Impatient Boss":

PrepareWork();
lock(phone)
{
    Monitor.PulseAll(phone); // Signal worker there is work to do
    if(Monitor.Wait(phone,1000)) // Wait for one second at most
        Console.Writeline("Good work!");
}

This is a simple example of monitor use :

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

namespace ConsoleApp4
{
    class Program
    {
        public static int[] X = new int[30];
        static readonly object _object = new object();
        public static int count=0;
        public static void PutNumbers(int numbersS, int numbersE)
        {

            for (int i = numbersS; i < numbersE; i++)
            {
                Monitor.Enter(_object);
                try
                {
                    if(count<30)
                    {
                        X[count] = i;
                        count++;
                        Console.WriteLine("Punt in " + count + "nd: "+i);
                        Monitor.Pulse(_object); 
                    }
                    else
                    {
                        Monitor.Wait(_object);
                    }
                }
                finally
                {
                    Monitor.Exit(_object);
                }
            }
        }

        public static void RemoveNumbers(int numbersS)
        {

            for (int i = 0; i < numbersS; i++)
            {
                Monitor.Enter(_object);
                try
                {
                    if (count > 0)
                    {
                        X[count] = 0;
                        int x = count;
                        count--;
                        Console.WriteLine("Removed " + x + " element");
                        Monitor.Pulse(_object);

                    }
                    else
                    {
                        Monitor.Wait(_object);
                    }
                }
                finally
                {
                    Monitor.Exit(_object);
                }
            }
        }



        static void Main(string[] args)
        {
            Thread W1 = new Thread(() => PutNumbers(10,50));
            Thread W2 = new Thread(() => PutNumbers(1, 10));
            Thread R1 = new Thread(() => RemoveNumbers(30));
            Thread R2 = new Thread(() => RemoveNumbers(20));
            W1.Start();
            R1.Start();
            W2.Start();
            R2.Start();
            W1.Join();
            R1.Join();
            W2.Join();
            R2.Join();
        }
    }
}