Checking a particular files locking status in C#

Hi there;

I want to check a particular file's locking status in C#.

But I am not sure of the accuracy of the code, moreover I need to find out the file is locked or not for every 5000 ms.

Here is the code, you can check for.

Kind regards.

P.S. A C++ version of this question is ongoing.

Let me enhance this; when my c# application checks for the locking, is it locking the file while checking it? A bitter question for me...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading;
using System.Runtime.InteropServices;

namespace LockerConsoleApplication2
{
    class FileManager
    {
        public string _fileName;

        private int _numberOfTries;

        private int _timeIntervalBetweenTries;

        public FileStream GetStream(FileAccess fileAccess)
        {
            var tries = 0;
            while (true)
            {
                try
                {
                    Console.WriteLine("OK");
                    return File.Open(_fileName, FileMode.Open, fileAccess, FileShare.None);                    
                }
                catch (IOException e)
                {
                    if (!IsFileLocked(e))
                        throw;
                    if (++tries > _numberOfTries)
                        throw new Exception("The file is locked too long: " + e.Message, e);
                    Thread.Sleep(_timeIntervalBetweenTries);
                }
            }
        }

        public static bool IsFileLocked(IOException exception)
        {
            int errorCode = Marshal.GetHRForException(exception) & ((1 << 16) - 1);
            return errorCode == 32 || errorCode == 33;
        }

        // other code

    }
    class Program
    {

        static void Main(string[] args)
        {
            FileManager fm = new FileManager();
            fm._fileName = @"C:\MYFILE.BIN";
            fm.GetStream(FileAccess.Read);
            FileManager.IsFileLocked(new IOException());
        }
    }
}

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