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.Net FileSystemWatcher Class copying large files- events.

c# .NET file system watcher class.

Using the file system class seems like a nice way to detect
when files appear in a folder.

When copying a large file the created event is fired right away.

What would be the best way to detect that file has been completely copied
before consuming the file for use.

here is a good example of the class.
http://www.codeguru.com/csharp/csharp/cs_network/article.php/c6043/

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AlexFM

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Bob Learned

What is the file size when the create event is fired?

Bob

grant300

When doing FTP, the common practice is to rename the file (with FTPrename) after the transfer is complete. Your consuming application looks for files with one extension while the transfer is done with a different extension, or, alternatively, you can rename the file between folders.

You may have to modify your file-producing application to rename the file after it is done creating it.

Regards,
Bill

sandip132

Try this:

System.Threading.Thread.Sleep(<some value>)

before starting any operation on the file.

kahvedzic

another sollution:
I had similar problem, here is how I solved it..Chose time (in miliseconds, to delay action after watched event is fired)
Set code below under FileSystemWatcher1_Created, just before you want to do copying..

Me.FileSystemWatcher1.WaitForChanged(IO.WatcherChangeTypes.Created, 60000)