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C# FileSystemWatcher

Here is a code sample which explains the concept of FileSystemWatcher class

using System;
using System.IO;

namespace ConsoleApplication1
    class Program
        static void Main(string[] args)
            FileSystemWatcher watcher = new 
FileSystemWatcher("c:\\LogFiles\\", "log.txt");
            watcher.Changed += new FileSystemEventHandler(watcher_Changed);
            watcher.EnableRaisingEvents = true;

        static void watcher_Changed(object sender, FileSystemEventArgs e)
            if (e.ChangeType == WatcherChangeTypes.Changed)
                using (TextWriter writer = new 
StreamWriter("C:\\ModifiedHistory.txt", true))
Categories: C#
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