Example of file system watcher

 
   using System;
   using System.Data;
   using System.Data.SqlClient; 
   using System.Drawing;
   using System.IO;
 
 
   public class Test
   {
       public static void Main(){
 
 
 
          FileSystemWatcher watcher = new FileSystemWatcher();
           Console.WriteLine("Started....");
 
          //watcher.SynchronizingObject = this;
 
         watcher.Path =Path.GetDirectoryName(@"C:\Java_Dev\");
         watcher.Filter = Path.GetFileName(@"c:\a.txt");
         watcher.NotifyFilter = NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.Size;
 
          watcher.Deleted += new System.IO.FileSystemEventHandler(OnDelete);
          watcher.Renamed += new System.IO.RenamedEventHandler(OnRenamed);
          watcher.Changed += new System.IO.FileSystemEventHandler(OnChanged);
          watcher.Created += new System.IO.FileSystemEventHandler(OnCreate);
          watcher.EnableRaisingEvents = true;
 
          Console.ReadLine();
       }
      public static void OnChanged(object source, FileSystemEventArgs e) {
         Console.WriteLine("File: {0} {1}", e.FullPath, e.ChangeType.ToString());
      }
 
 
      public static void OnRenamed(object source, RenamedEventArgs e){
         Console.WriteLine("File renamed from {0} to {1}", e.OldName, e.FullPath);
      }
 
 
      public static void OnDelete(object source, FileSystemEventArgs e)
      {
          Console.WriteLine("File: {0} Deleted", e.FullPath);
      }
      public static void OnCreate(object source, FileSystemEventArgs e)
      {
          Console.WriteLine("File: {0} Created", e.FullPath);
      }
 
 
 
   }