Asyn and Await to write to a File .

Using Async and Await (Asynchronous programming to ) write to files in a synchronous manner one .by creating 4 child threads (Task) existing from the threadpool. 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.IO;
namespace CLRprof
{
    class asyncawait
    {
        public Task Longrunningprocess(string filename,string text)
        {

            return Task.Run(() =>
            {
                Monitor.Enter(this);
                using (StreamWriter writer = new StreamWriter(filename, true))
                {
                    writer.Write(text);
                    writer.Close();
                    Monitor.Exit(this);
                    Thread.Sleep(1000);
                    Console.WriteLine("Finished the Longrunning process");
                }
            });

        }

        public async void CallProcess()
        {
            await Longrunningprocess("shared.txt", "Write for me first1");
            await Longrunningprocess("shared.txt", "Write for me first2");
            await Longrunningprocess("shared.txt", "Write for me first3");
            await Longrunningprocess("shared.txt", "Write for me first4");
            Console.WriteLine("Finished");
        }
    }

    class program
    {
        public static void Main()
        {
            asyncawait a = new asyncawait();
            a.CallProcess();
            Console.WriteLine("Main thread Finished");
            Console.ReadLine();

        }
    }



}