Sunday, April 9, 2017

C# code snippet for setting up a FileSystemWatcher on a directory or file

          
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using System;
using System.IO;

 FileSystemWatcher watcher = new FileSystemWatcher();
 watcher.Path = @"C:\filedumps";
        /* Watch for changes in LastWrite times, and the renaming of files  */
        watcher.NotifyFilter = NotifyFilters.LastWrite | NotifyFilters.FileName;
        // watch text files
        watcher.Filter = "*.txt";
        // Add event handlers
        watcher.Changed += new FileSystemEventHandler(OnChanged);
        watcher.Renamed += new RenamedEventHandler(OnRenamed);

        // raise events
        watcher.EnableRaisingEvents = true;

    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);
    }