查找在 FileSystemWatcher 中触发 Changed 事件时发生的更改

Question

I am using a FileSystemWatcher to monitor changes to files.

MSDN documentation says that if Changed is passed for the ChangeType in the FileSystemEventArgs parameter, it indicated "The change of a file or folder. The types of changes include: changes to size, attributes, security settings, last write, and last access time."

Is there a way to find out which one of those changed? For example, last access can alone change without change to size. I want to find that out. How can I do it?

PS Of course if I record all the attributes that I care about every time Changed event is fired, and then compared them, I can find out what changed. But is there an easier way.. like being notified through some event or reading a property of some object? :D

Answer 1

You can use FileSystemWatcher.NotifyFilter to filter events based on what happened. MSDN