FileSystemWatcher Missing Events

Question

  I'm using a FSW to detect when a text file is written to
so that i can read the additions to the file. The changes are
occurring as fast as 10 per second. However the changed
event is only being called ~25% of the time thus missing
a significant number of events. The event handing code is
very short and I have tried doubling the size of the event
buffer with no improvement.
Any ideas on what might be happening to cause this?
Thanks,
TFisher

Answer 1

FSW may combine events. If a file is written once and then written again, you may only get one notification.

That's just the way it works.

       -Steve

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Answer 2

   Thanks, Steve. IF that is the way it works, I'll just use a timer event
to read the file size and act accordingly.
TFisher

Answer 3

I've also noticed that the less you give a given FSW instance to do, the better and faster it responds.

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