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Listens to the file system change notifications and raises events

using System; using System.IO; using System.Security.Permissions; public class Watcher {     public static void Main()     {         Run();     }     [PermissionSet(SecurityAction.Demand, Name="FullTrust")]     public static void Run()     {         string[] args = System.Environment.GetCommandLineArgs();         FileSystemWatcher watcher = new FileSystemWatcher();         watcher.Path = "c:\\";         watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;         watcher.Filter = "*.txt";         watcher.Changed += new FileSystemEventHandler(OnChanged);         watcher.Created += new FileSystemEventHandler(OnChanged);         watcher.Deleted += new FileSystemEventHandler(OnChanged);         watcher.Renamed += new RenamedEventHandler(OnRenamed);         watcher.EnableRaisingEvents = true;         Console.WriteLine("Press \'q\' to quit the sample.");         while(Console.Read()!='q');     }     private static void OnChanged(object source, FileSystemEventArgs e)     {        Console.WriteLine("File: " +  e.FullPath + " " + e.ChangeType);     }     private static void OnRenamed(object source, RenamedEventArgs e)     {         Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);     } }