Наблюдение за файлом

using System;
using System.Collections.Generic;
using System.Linq;
using System.Management;
using System.Text;
using System.Threading.Tasks;
using System.IO;
 
namespace I_see_you
{
    class file
    {
 
        public static void process()
        {
          
            System.Timers.Timer tm = new System.Timers.Timer();
            tm.Elapsed += new System.Timers.ElapsedEventHandler(tm_Tick);
            tm.Interval = 1000;
            tm.Start();
        }
        static void tm_Tick(object sender, System.Timers.ElapsedEventArgs e)
        {
           // string file = "";
 
            if (Program.filewatch == true)
            {
                System.Threading.Thread.Sleep(1000);
 
                    FileSystemWatcher watcher = new FileSystemWatcher(@"D:\test", "*.*");
        //watcher.NotifyFilter = NotifyFilters.CreationTime | NotifyFilters.LastAccess | NotifyFilters.LastWrite;
        watcher.Changed += new FileSystemEventHandler(OnChanged);
        watcher.Created += new FileSystemEventHandler(OnChanged);
        watcher.Deleted += new FileSystemEventHandler(OnChanged);
        //string log = OnChanged;
        //System.IO.File.WriteAllText(@"D:\log.txt", log);
        watcher.EnableRaisingEvents = true;
        Console.Read();
 
            }
        }
 
static void OnChanged(object sender, FileSystemEventArgs e)
    {
        Console.WriteLine("Type: {0}, Path: {1}", e.ChangeType, e.FullPath);
    }
                }
            }

static void OnChanged(object sender, FileSystemEventArgs e)
    {
        Console.WriteLine("Type: {0}, Path: {1}", e.ChangeType, e.FullPath);
    }

static void OnChanged(object sender, FileSystemEventArgs e)
    {
            using (StreamWriter sw = new StreamWriter("CDriveDirs.txt"))
            {
                sw.WriteLine(("Type: {0}, Path: {1}", e.ChangeType, e.FullPath);
            }
    }