What causes a FileSystemWatcher object to go stale?

Question

I have a FileSystemWatcher that processes files based on file system events. After awhile, the process is still alive, but it no longer detects the file system events. The process watches a local network share drive.

Anything I should be watching out for?

Answer 1

Most likely small drops in network connectivity. Check this article.

Basically:

• set watcher.EnableRaisingEvents = true
• add an event handler to watcher.Error

Then re-bind on error.

Answer 2

http://bytes.com/topic/visual-basic-net/answers/536125-filesystemwatcher-across-network

Answer 3

I guess I better post the answer instead of leaving it in the comment: did you implement the Error event? When you do get errors, bump up the value of the InternalBufferSize property. Try 16384.