Question

How do you check for a newly created file. This only works for an edited file.

        DateTime time = DateTime.Now;             // Use current time
        string format = "dMyyyy";            // Use this format
        string s = time.ToString(format); 



        fileSystemWatcher1.Path = @"C:\Users\Desktop\test\";
        fileSystemWatcher1.NotifyFilter =   NotifyFilters.LastAccess | 
                                            NotifyFilters.LastWrite | 
                                            NotifyFilters.FileName | 
                                            NotifyFilters.DirectoryName;

        fileSystemWatcher1.IncludeSubdirectories = false;
        fileSystemWatcher1.Filter = s + ".txt";

Answer 1

Following the example outlined in this article C#: Application to Watch a File or Directory using FileSystem Watcher

You need to describe what has to be done when one of these attributes in fileSystemWatcher1.NotifyFilter gets altered by assigning different event handlers to different activities. For example:

fileSystemWatcher1.Changed += new FileSystemEventHandler(OnChanged);
fileSystemWatcher1.Created += new FileSystemEventHandler(OnChanged);
fileSystemWatcher1.Deleted += new FileSystemEventHandler(OnChanged);
fileSystemWatcher1.Renamed += new RenamedEventHandler(OnRenamed);

With the signatures of both the handlers as

void OnChanged(object sender, FileSystemEventArgs e)
void OnRenamed(object sender, RenamedEventArgs e)

Example handler for OnChanged

public static void OnChanged(object source, FileSystemEventArgs e)
{
   Console.WriteLine("{0} : {1} {2}", s, e.FullPath, e.ChangeType);
}

And then enable the watcher to raise events:

fileSystemWatcher1EnableRaisingEvents = true;