FileSystemWatcher OnCreated返回的字符串？

Question

I would like to make the FileSystemWatcher monitor a folder and once there is a file created inside to get the filename so after that file could be read by File.OpenRead() and a StreamReader

I have seen a lot of examples but not my case exactly:

        public static void FileWatcher()
    {
        FileSystemWatcher watcher = new FileSystemWatcher();
        watcher.Path = @"C:\Users\";
        watcher.NotifyFilter = NotifyFilters.LastWrite;
        watcher.Filter = "*.txt";
        watcher.Created += new FileSystemEventHandler(OnCreated);
        watcher.EnableRaisingEvents = true;
    }

    public static void OnCreated(object source, FileSystemEventArgs e)
    {
        string filename = Path.GetFileName(e.FullPath);
    }

My question is how to get the filename that is going to be created in that folder and pass its path and file to since the event method is a void:

const string fileName = @"C:\Users\.txt";
        using (var stream = File.OpenRead(fileName))
        using (var reader = new StreamReader(stream))

Any help appreciated!

Answer 1

I'd recommend encapsulating your file processing in a separate class.

public class FileProcessor
{
      public void ProcessFile(string filePath)
       {
           using (var stream = File.OpenRead(filePath))
           //etc...

       }
}

Then instance it and call it.

 public static void OnCreated(object source, FileSystemEventArgs e)
    {
       var processor = new FileProcessor();
       processor.ProcessFile(e.FullPath);
    }

Or if your method is in the same class as the Created event

YourMethodName(e.FullPath);

And your method should have a signature like this

void YourMethodName (string filePath)
{
  //Process file
}