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Replacing the contents to the file (ie no append), OnFileChanged event fires two times for a write to the file. #Filewatcher change every 10 seconds update#Update 2: Using StreamWriter to update the text file, it makes a difference whether you APPEND to the file contents or REPLACE the file contents.Īppending to the file, OnFileChanged event fires once for a write to the file. So it makes be wonder if Notepad is indeed performing more than one write/save operation when I click the Notepad Save menu item. And the OnFileChanged event only fires one time for each text file change. #Filewatcher change every 10 seconds code#I tried updating the text file from code using. ![]() ![]() String aFilepath = Now I'm starting to think this may be a MS Notepad issue. Private void OnFileChanged(object source, FileSystemEventArgs e)Ĭonsole.WriteLine("OnFileChanged" + ctr) Watcher.Changed += new FileSystemEventHandler(OnFileChanged) Watcher.NotifyFilter = NotifyFilters.LastWrite String fileName = Path.GetFileName(path) String folderName = Path.GetDirectoryName(path) Private void FileWatcherSetup(string path)įileSystemWatcher watcher = new FileSystemWatcher() So maybe we can hold this issue open for a while? A coder reading this could have an idea to help. #Filewatcher change every 10 seconds windows#I need to investigate more time to explore behavior of code in a Windows service. Maybe it has something to do with Windows messaging on specific servers. So I guess I am not the only person having trouble with this. This is from the documentation of the class. ![]() I am afraid that this is a well-known bug/feature of the FileSystemWatcher class. FileWatcher Automatização de updates de dashboards do Qualiex by andrersilva10 C Updated: 3 years ago - Current License: No License. kandi ratings - Low support, No Bugs, No Vulnerabilities. I noticed this behaviour years ago to face this again now. Implement FileWatcher with how-to, Q&A, fixes, code snippets. The main difference is that this this custom filewatcher class is implemented in a Windows service executable. In fact I am getting System.IO.IOExceptions at on our production servers. I was not able to reproduce this behavior on my machine. Just tried to create a reproducable example but failed □. Basically, you just need to make sure that files don't get stuck in the queue and cause your threads to constantly try and process them unsuccessfully over and over.Thank you for the reply. And if your transcoding fails, you'll still want to move the input file to some sort of "error" directory. Sometimes if you have a really long queue, it's enough to just move that file to the end of the queue. In that case you might need to play around with timing, or checking the file state (readable/writable/etc). Sometimes the file may not be ready yet (like if you're downloading a large file - it might fire an event even though only part of the file is there). When the queue is empty, the threads wait for the Semaphore.Įdit: As for duplicates - I don't think it should be an issue as long as you move or delete the input file when you're finished transcoding. Then you have another thread (or pool of threads) go through the queue processing files. Instead, when you have an event fire, the only thing it needs to do is add the file path to a queue (using lock/thread synchronization) and release a Semaphore. Keep the callback code as simple as possible - don't actually do the processing in the callback. What I've done in the past that works really well is to follow a producer-consumer pattern. The FileSystemWatcher isn't necessarily bad, but it can definitely have performance issues. ![]()
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