Monitor the file system with FileSystemWatcher in C# .NET Part 3: errors

In this and this post we looked at how to use FileSystemWatcher to monitor the creation, deletion and update of files within a directory. It can happen that there are more changes than the FileSystemWatcher object can handle. In that case FileSystemWatcher raises the Error event which you can subscribe to as follows:

static void Main(string[] args)

private static void RunErrorExample()
	FileSystemWatcher watcher = new FileSystemWatcher();
	watcher.Path = @"c:\mydirectory";
	watcher.Error += watcher_Error;
	watcher.EnableRaisingEvents = true;

static void watcher_Error(object sender, ErrorEventArgs e)
	Exception ex = e.GetException();
	if (ex.InnerException != null)

Read the next and last installment on this topic here.

Read all posts dedicated to file I/O here.

About Andras Nemes
I'm a .NET/Java developer living and working in Stockholm, Sweden.

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