Csharp/C Sharp/File Stream/FileSystemWatcher

On file created or deleted

using System;
using System.IO;
using System.Windows.Forms;
class MainClass {
    static void Main(string[] args) {
        using (FileSystemWatcher watch = new FileSystemWatcher()) {
            watch.Path = Application.StartupPath;
            watch.Filter = "*.*";
            watch.IncludeSubdirectories = true;
            // Attach the event handler.
            watch.Created += new FileSystemEventHandler(OnCreatedOrDeleted);
            watch.Deleted += new FileSystemEventHandler(OnCreatedOrDeleted);
            watch.EnableRaisingEvents = true;
            Console.WriteLine("Press Enter to create a  file.");
            Console.ReadLine();
            if (File.Exists("test.bin")) {
                File.Delete("test.bin");
            }
            // Create test.bin.
            using (FileStream fs = new FileStream("test.bin", FileMode.Create)) {
                // Do something.
            }
            Console.WriteLine("Press Enter to terminate the application.");
            Console.ReadLine();
        }
    }
    private static void OnCreatedOrDeleted(object sender, FileSystemEventArgs e) {
        Console.WriteLine("\tNOTIFICATION: " + e.FullPath + "" was " + e.ChangeType.ToString());
        Console.WriteLine();
    }
}

Set NotifyFilter of FileSystemWatcher

using System;
using System.IO;
public class Program {
    static void Main(string[] args) {
        FileSystemWatcher watcher = new FileSystemWatcher();
        try {
            watcher.Path = @"C:\MyFolder";
        } catch (ArgumentException ex) {
            Console.WriteLine(ex.Message);
            return;
        }
        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 app.");
        while (Console.Read() != "q") ;
    }
    private static void OnChanged(object source, FileSystemEventArgs e) {
        Console.WriteLine("File: {0} {1}!", e.FullPath, e.ChangeType);
    }
    private static void OnRenamed(object source, RenamedEventArgs e) {
        Console.WriteLine("File: {0} renamed to\n{1}", e.OldFullPath, e.FullPath);
    }
}