Check for the file system watcher in C#

Question

I have written this code for watching files in my system, but its not alerting any modificationms in the folder or file. How can I achieve this? I am not understanding as it does not show any exceptions or errors.

static void Main(string[] args)
{
  FileSystemWatcher();
}

public static void FileSystemWatcher()
{
    FileSystemWatcher watcher = new FileSystemWatcher();
    watcher.Path = @"D:\watcher";
    watcher.NotifyFilter = NotifyFilters.LastWrite;
    watcher.Filter = "*.*";
    watcher.Changed += new FileSystemEventHandler(OnChanged);
    watcher.EnableRaisingEvents = true;
    Console.Read();
}
private static void OnChanged(object sender, FileSystemEventArgs e)
{
   Console.WriteLine(e.Name + " has changed");
}

Answer 1

I updated the code. The NotifyFilter needs to be expanded if you want to see new files added

    static void Main(string[] args)
    {
        FileSystemWatcher();
    }

    public static void FileSystemWatcher()
    {
        FileSystemWatcher watcher = new FileSystemWatcher();
        watcher.Path = @"D:\temp";
        watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
   | NotifyFilters.FileName | NotifyFilters.DirectoryName;
        watcher.Filter = "*.*";
        watcher.Changed += new FileSystemEventHandler(OnChanged);
        watcher.Created += Watcher_Created;
        watcher.Renamed += Watcher_Renamed;
        watcher.EnableRaisingEvents = true;
        Console.Read();
    }

    private static void Watcher_Renamed(object sender, RenamedEventArgs e)
    {
        Console.WriteLine(e.Name + " has been renamed");
    }

    private static void Watcher_Created(object sender, FileSystemEventArgs e)
    {
        Console.WriteLine(e.Name + " has been added");
    }

    private static void OnChanged(object sender, FileSystemEventArgs e)
    {
        Console.WriteLine(e.Name + " has changed");
    }