using System.IO;

// Create a new FileSystemWatcher object and specify the folder to monitor.
FileSystemWatcher watcher = new FileSystemWatcher("C:\\FolderToMonitor");

// Set the event handlers for the Created and Error events.
watcher.Created += OnCreated;
watcher.Error += OnError;

// Start watching the folder for changes.
watcher.EnableRaisingEvents = true;

// This method will be called when a new file is created in the folder.
private static void OnCreated(object source, FileSystemEventArgs e)
{
    // Print a message to the console.
    Console.WriteLine("A new file was created: " + e.FullPath);
}

// This method will be called if there is an error while watching the folder.
private static void OnError(object source, ErrorEventArgs e)
{
    // Print a message to the console.
    Console.WriteLine("An error occurred: " + e.GetException().Message);
}