Filesystemwatcher changed event fires twice... WHY? BUG??

[Ferhad Cebiyev]

OK. That's my code:



I have a code here:





using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;



namespace MyDirectoryWatcher

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine("***** The Amazing File Watcher App *****\n");



// Establish the path to the directory to watch.

FileSystemWatcher watcher = new FileSystemWatcher();

try

{

watcher.Path = @"C:\MyFolder";

}

catch (ArgumentException ex)

{

Console.WriteLine(ex.Message);

return;

}



// Set up the things to be on the lookout for.

watcher.NotifyFilter = NotifyFilters.LastAccess

| NotifyFilters.LastWrite

| NotifyFilters.FileName

| NotifyFilters.DirectoryName;



// Only watch text files.

watcher.Filter = "*.txt";



// Add event handlers.

watcher.Changed += new FileSystemEventHandler(OnChanged);

watcher.Created += new FileSystemEventHandler(OnChanged);

watcher.Deleted += new FileSystemEventHandler(OnChanged);

watcher.Renamed += new RenamedEventHandler(OnRenamed);



// Begin watching the directory.

watcher.EnableRaisingEvents = true;



// Wait for the user to quit the program.

Console.WriteLine(@"Press 'q' to quit app.");

while (Console.Read() != 'q') ;

}



static void OnChanged(object source, FileSystemEventArgs e)

{

// Specify what is done when a file is changed, created, or deleted.

Console.WriteLine("File: {0} {1}!", e.FullPath, e.ChangeType);

}



static void OnRenamed(object source, RenamedEventArgs e)

{

// Specify what is done when a file is renamed.

Console.WriteLine("File: {0} renamed to\n{1}", e.OldFullPath, e.FullPath);

}

}

}





Why Changed event fires twice????

MICROSOFT

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