I have two applications, CREATOR (which I can't modify) and OBSERVER. CREATOR manipulates many files, and I need OBSERVER to know when that happens. I wrote OBSERVER in C#, and I'm using FileSystemWatcher. I set path to my path, set filter to FILE and add all the necessary events.开发者_JS百科 But when CREATOR modifies the file, no event is raised in OBSERVER. Oddly, when I modify the file by hand, OBSERVER does see the change. I thought that maybe CREATOR doesn't free the file, but when I close CREATOR, OBSERVER still doesn't see the change.

Any idea what I'm doing wrong?

Extra details: When CREATOR modifies the file, I can delete it by hand, or when I open the file I see that all changes are saved.

edit

my fileSystemWatcher object setting:

fileSystemWatcherObs.EnableRaisingEvents = true;
fileSystemWatcherObs.Filter = "kbd.dbf";
fileSystemWatcherObs.IncludeSubdirectories = true;
fileSystemWatcherObs.NotifyFilter = NotifyFilters.FileName | NotifyFilters.LastWrite | NotifyFilters.Attributes |
    NotifyFilters.CreationTime | NotifyFilters.DirectoryName |NotifyFilters.LastAccess | NotifyFilters.Security |
    NotifyFilters.Size;
fileSystemWatcherObs.Path = "D:\\FOLDER";
fileSystemWatcherObs.SynchronizingObject = this;
fileSystemWatcherObs.Changed += new System.IO.FileSystemEventHandler(  this.fileSystemWatcherObs_Changed );
fileSystemWatcherObs.Created += new System.IO.FileSystemEventHandler( this.fileSystemWatcherObs_Created );
fileSystemWatcherObs.Deleted += new System.IO.FileSystemEventHandler( this.fileSystemWatcherObs_Deleted );
fileSystemWatcherObs.Renamed += new System.IO.RenamedEventHandler( this.fileSystemWatcherObs_Renamed );

and of course method for this events

Here a few hints that maybe helps you:

1. It doesn't matter if you made the changes by hand or by another application "you CREATOR", since when you make them by hand, you actually use some application like "notepad.exe" or something, so that is not really matters.
2. You should set EnableRaisingEvent to true "start watching" after you set the path and register the event handlers, so the it should be last thing after set all the configurations of the watcher.
3. At your NotifyFilter are setting the whole notifications filters which will leads you to receive duplicates notifications some times.
4. Since you only want to watch a specific folder, then you don't have to include sub folders, i.e fIncludeSubdirectories should be false.
5. Why you are setting a SynchronizingObject to this? a better if you have to anyway is to take it to a new object().