filesystemwatcher

问题 This question already has answers here : FileSystemWatcher Changed event is raised twice (39 answers) Closed 10 months ago . I want to monitor the following New File being created/copied to the directory Existing file edited I use the following code to subscribe to the created and changed event of the FileSystemWatcher class.I have noted some issues with FSW Class. On replacing files, the changed event is getting triggered numerous times. How can i get over this issue.Kindly advice. watcher

问题 Im trying to monitor a directory and its subdirectory for new files. I want to look at the file extension and move it to its appropriate folder based on the file extension. For example, If i have a folder "C:\users\dave\desktop\test" and i download an avi file to that folder, id like the script to see it and move the file to a C:\movies automatically. Or if i download an entire folder of mp3 files, i'd like it to move that entire folder to C:\music automatically. Right now it moves just the

问题 I wrote a test program to monitor my Picture folder which points to c:\users[username]\Pictures and temporary internet files folder for the same user. This is program works perfectly fine if I change the folder to other location like d:\persona_pics. Any idea why events are not being raised when I set the mentioned folder to monitor? here is the code. class Program { static void Main(string[] args) { //FileSystemWatcher myJpegFileWatcher = new FileSystemWatcher(@"C:\Users\[username]\AppData

问题 I'm monitoring a folder using FileSystemWatcher. If I download a file into there, how do I get the name of that downloaded file? For example, if I downloaded a file named TextFile.txt, how would I have it return that as a string? I am assuming this will work for all four triggers (changed, created, deleted, renamed)? I have IncludeSubdirectories set to true, so it should be able to do that. 回答1: On the OnCreated event, add this code: private void watcher_OnCreated(object source,

问题 I'm using a FileSystemWatcher (in an ASP.NET web app) to monitor a file for changes. The watcher is set up in the constructor of a Singleton class, e.g: private SingletonConstructor() { var fileToWatch = "{absolute path to file}"; var fsw = new FileSystemWatcher( Path.GetDirectoryName(fileToWatch), Path.GetFileName(fileToWatch)); fsw.Changed += OnFileChanged; fsw.EnableRaisingEvents = true; } private void OnFileChanged(object sender, FileSystemEventArgs e) { // process file... } Everything

问题 We have built a window service that listens to folders with FileSystemWatcher , when created we process the file and so on. But after couple of days the event stops working. Is it possible that it being collected by the garbage collector (GC)? Does the GC collect it holding class (which is a singleton)? Should I use a weak event? Do I have a bug that means the event gets unregistered? What i think the problem is, that FSW has an internal buffer, when it overflows its an error, take a look in

问题 I have the following sub: Private Sub Watcher_Changed(ByVal sender As System.Object, ByVal e As FileSystemEventArgs) If Path.GetExtension(e.Name) = ".p2p" Then Exit Sub Else Try ' multiple change events can be thrown. Check that file hasn't already been moved. While Not File.Exists(e.FullPath) Exit Try End While ' throw further processing to a BackGroundWorker ChangedFullPath = e.FullPath ChangedFileName = e.Name FileMover = New BackgroundWorker AddHandler FileMover.DoWork, New

问题 I have a FileSystemWatcher monitoring a file on a network share. If an event occurs to make the share unavailable, maybe due to a network problem, the FileSystemWatcher becomes disconnected. Obviously I can handle the "Error" event, maybe do some logging and lots of articles suggest reconnecting the FSW inside the error event handler. But what if the network share is still unavailable inside the error event. I then need to introduce a timer to test if the network share is available and

问题 I monitor files that are dropped on a ftp via filesystem watcher then move to another dir. Now I trigger the copy off the create event of the filesystem watcher but obviously in the case of ftp the create is just a stub file and the data comes in and fills the file as it uploads till complete. Anyone have an elegant solution for this, or do I have to do what I think I have to do 1 wait till last access time is about n ms in past before I copy 2 throw a control file in there to state that that

问题 I"m looking for something (Win API calls or whatever) to notify me when a file becomes available for editing (i.e. no longer in use). Should I set up a timer to check the files on some interval or is there a good way to set up a watch on the file? 回答1: FileSystemWatcher doesn't help, nor does the Win32 FindFirstChangeNotification: they won't tell you when someone releases a file handle. Your best way is to periodically attempt to open the file with the access you want, handling any errors.