Using Task in C#

I had a requirement where i need to wait for a particular file to be available and the need to make operations on the file.
I thought of using Task to wait for this action to complete and throw an error if file is not available after certain amount of time. I made use of cancellation token service to make this happen. The following is the sample code for this.

using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace TaskWaitSample
{
    public class Program
    {
        static void Main(string[] args)
        {
            var fileName = @"C:\TestFileDir\Narendra.txt";

            CancellationTokenSource ts = new CancellationTokenSource(120000);

            var task = Task.Factory.StartNew(() =>  CheckForFile(fileName, ts.Token), ts.Token);


            if (task.Result)
            {
                Console.WriteLine("Got result");
            }
            else
            {
                Console.WriteLine("Exiting after waiting");
            }


            Console.WriteLine("Exited task");

            Console.Read();
        }


        public static bool CheckForFile(string fileName, CancellationToken ts)
        {
           
            
          
            while (!ts.IsCancellationRequested)
            {
                //Console.WriteLine("Checking at {0}", DateTime.Now.TimeOfDay);

                if (File.Exists(fileName))
                {
                    return true;
                }

            }


            return false;
        }
    }
}