illustrates the FileSystemWatcher class

 
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

 /*
  Example15_9.cs illustrates the FileSystemWatcher class
*/

using System;
using System.IO;

public class Example15_9 
{

  // event handler for file change
  public static void OnChanged(object source, FileSystemEventArgs e) 
  {
    // dump info to the screen
    Console.WriteLine("Change to " + e.FullPath + ": " +
     e.ChangeType);
  }

  public static void Main() 
  {

    // create a watcher for the c: drive
    FileSystemWatcher fsw = new FileSystemWatcher("c:\\");
    fsw.IncludeSubdirectories = true;

    // hook up the event handler
    fsw.Changed += new FileSystemEventHandler(OnChanged);

    // turn on file watching
    fsw.EnableRaisingEvents = true;
    
    // And wait for the user to quit
    Console.WriteLine("Press any key to exit");
    int i = Console.Read();

  }

}

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3.	Get File Access Control
4.	illustrates the FileAttributes enumeration
5.	illustrates the FileInfo class
6.	File class to check whether a file exists, open and read
7.	Uses methods in the File class to check whether a file exists
8.	Uses methods in the File class to check the status of a file
9.	File Class
10.	File.AppendAllLines Method Appends lines to a file, and then closes the file.
11.	File.AppendAllText Opens a file, appends the specified string to the file
12.	File.AppendAllText Method Appends the string to the file, creating the file if it does not exist.
13.	File.AppendText Creates a StreamWriter that appends UTF-8 encoded text to an existing file.
14.	File.Copy Method Copies file to a new file
15.	File.Create Creates or overwrites a file in the specified path.
16.	File.Create Method (String, Int32) Creates or overwrites the specified file.
17.	File.CreateText Method Creates or opens a file for writing UTF-8 encoded text.
18.	File.Decrypt Decrypts a file
19.	File.Exists Determines whether the specified file exists.
20.	File.GetAccessControl Gets a FileSecurity object that encapsulates the access control list
21.	File.GetAttributes Method Gets the FileAttributes of the file on the path.
22.	File.GetCreationTime Method Returns the creation date and time of the specified file or directory.
23.	File.GetLastAccessTime Method Returns the date and time the specified file or directory was last accessed.
24.	File.GetLastWriteTime Returns the date and time the specified file or directory was last written to.
25.	File.Move Moves a file to a new location
26.	File.Open Opens a FileStream on the specified path with read/write access.
27.	File.Open Method (String, FileMode, FileAccess)
28.	File.Open Method (String, FileMode, FileAccess, FileShare)
29.	File.OpenRead Method Opens an existing file for reading.
30.	File.OpenText Method Opens an existing UTF-8 encoded text file for reading.
31.	File.OpenWrite Method Opens an existing file or creates a new file for writing.
32.	File.ReadAllLines Method Opens a text file, reads all lines of the file, and then closes the file.
33.	File.ReadAllLines Method (String, Encoding)
34.	File.ReadLines Method
35.	File.Replace Replaces contents of file
36.	File.SetLastAccessTime Sets the date and time the specified file was last accessed.
37.	File.SetLastWriteTime

illustrates the FileSystemWatcher class : File « File Stream « C# / C Sharp

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