how to use file watcher in c#
private void watch()
{
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = path;
watcher.NotifyFilter = NotifyFilters.LastWrite;
watcher.Filter = "*.*";
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.EnableRaisingEvents = true;
}c# file watcher specific file
watcher.Path = Path.GetDirectoryName(filePath1);
watcher.Filter = Path.GetFileName(filePath1);c# FileSystemWatcher
public class Monitor : IDisposable
{
private List<string> filePaths;
private ReaderWriterLockSlim rwlock;
private Timer processTimer;
private string watchedPath;
private FileSystemWatcher watcher;
public Monitor(string watchedPath)
{
filePaths = new List<string>();
rwlock = new ReaderWriterLockSlim();
this.watchedPath = watchedPath;
InitFileSystemWatcher();
}
private void InitFileSystemWatcher()
{
watcher = new FileSystemWatcher();
watcher.Filter = "*.*";
watcher.Created += Watcher_FileCreated;
watcher.Error += Watcher_Error;
watcher.Path = watchedPath;
watcher.IncludeSubdirectories = true;
watcher.EnableRaisingEvents = true;
}
private void Watcher_Error(object sender, ErrorEventArgs e)
{
// Watcher crashed. Re-init.
InitFileSystemWatcher();
}
private void Watcher_FileCreated(object sender, FileSystemEventArgs e)
{
try
{
rwlock.EnterWriteLock();
filePaths.Add(e.FullPath);
if (processTimer == null)
{
// First file, start timer.
processTimer = new Timer(2000);
processTimer.Elapsed += ProcessQueue;
processTimer.Start();
}
else
{
// Subsequent file, reset timer.
processTimer.Stop();
processTimer.Start();
}
}
finally
{
rwlock.ExitWriteLock();
}
}
private void ProcessQueue(object sender, ElapsedEventArgs args)
{
try
{
Console.WriteLine("Processing queue, " + filePaths.Count + " files created:");
rwlock.EnterReadLock();
foreach (string filePath in filePaths)
{
Console.WriteLine(filePath);
}
filePaths.Clear();
}
finally
{
if (processTimer != null)
{
processTimer.Stop();
processTimer.Dispose();
processTimer = null;
}
rwlock.ExitReadLock();
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (rwlock != null)
{
rwlock.Dispose();
rwlock = null;
}
if (watcher != null)
{
watcher.EnableRaisingEvents = false;
watcher.Dispose();
watcher = null;
}
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}Copyright © 2021 Codeinu
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