3/5/2023 0 Comments Filewatcher quitAn object can be released by the GC if it is itself not referencing anymore to something and if it is not referenced anymore by any other object (and the last one makes it complex).I have created a very simple from example anycodings_c# (console) of the filsystemwatcher to listen anycodings_c# for changes on a single directory. However, I assume that because of this handler complexity (and the watcher is a separated process) it still will stay in memory after the first generation of the GC and will not be released before generation 2. Remove Handler fsw.Renamed, AddressOf OnRenamed And then you can try the dispose method to make the objects unusable, which seems to help a little bit to do the releasing a little bit quicker for objects typically falling in generation 0. Remove Handler fsw.Deleted, AddressOf OnChanged Remove Handler fsw.Created, AddressOf OnChanged RemoveH andler fsw.Changed, AddressOf OnChanged Yea but your handlers are still referencing to the filesystemWatcher object, so I think you would more benefit with You would call it manually, or use a construct which calls it for you. Method, it is there for you to call it when you have finished with the object. To reiterate as a general rule: if an object has a Dispose Theĭispose method cleans up the handles, and so on, in a controlled fashion. (FSW) accesses native windows methods, which use a variety of windows handles, that we really don't care to manage ourselves. Again, not all objects are as well behaved, but using the framework objects this is not likely to be a concern.Ĭalling dispose on this object, however, is a bit more critical: the FileSystemWatcher On well behaved objects, calling dispose multiple times should not matter. Some objects have a Close event which calls the dispose method callingĭispose may be redundant. Both are good things, although disposing - in this case - also detaches the events. So, in this case, we 'detach' the events and then dispose. In which case, the object will not be finalized, disposed, etc. is possible that you do have other references to the object, particularly if you have attached handlers to events the object raises. Yes, if you do not call it, it will eventually be called when there are no references attached to the object and it isįinalized. Generally, if an object has a Dispose method, it is there for you to call it when you have finished with the object. NotifyFilters.Attributes Or NotifyFilters.CreationTime Or NotifyFilters.Security Or NotifyFilters.Size)įsw.IncludeSubdirectories = True AddHandler fsw.Changed, AddressOf OnChangedĪddHandler fsw.Created, AddressOf OnChangedĪddHandler fsw.Deleted, AddressOf OnChangedĪddHandler fsw.Renamed, AddressOf OnRenamedįsw.EnableRaisingEvents = True Catch ex As ExceptionĮnd Try End Sub 'Stop Button Pressed For Each fsw In fswlist Try Dim fsw As FileSystemWatcher = New FileSystemWatcher(path)įsw.NotifyFilter = (NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.FileName Or NotifyFilters.DirectoryName Or _ Try For Each path As String In ListBox1.ItemsĮnd Try End Sub Public Sub StartWatcher( ByVal path As String) Private Sub ButtonWatcher_Click(sender As System.Object, e As System.EventArgs) Handles ButtonWatcher.Click Public fswlist As List(Of FileSystemWatcher)
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