if you click it again, it will stop monitoring the file system.
#Filewatcher stopped working how to#
Now, whenever a file is deleted, the handler takes 4 extra seconds.Įven if you delete a great number of files, they will all be listed eventually. The FileSystemWatcher project, shows how to set up a FileSystemWatcher component and how.
#Filewatcher stopped working code#
You can test this by uncommenting the marked part in the code for deletion events. What’s more important: this code uses a queue internally, so when there are many changes in a short period of time, they are all processed once PowerShell is no longer busy. When you press CTRL+C, the script ends, and all event handlers are automatically cleaned up in the finally block. When you run this, the folder specified in $PathToMonitor will be monitored for changes, and when a change occurs, a message is emitted. EnableRaisingEvents = $false $FileSystemWatcher. $handlers | Remove-Job # remove filesystemwatcher Unregister-Event -SourceIdentifier FSChange Unregister-Event -SourceIdentifier FSCreate Unregister-Event -SourceIdentifier FSDelete Unregister-Event -SourceIdentifier FSRename # remove background jobs # this gets executed when user presses CTRL+C Wait-Event -Timeout 1 Write-Host "." -NoNewline
Write-Host "Watching for changes to $PathToMonitor" try 3) Existing files: FileSystemWatcher will not tell you about files that exist when you create it, so when your service starts you most likely want to look for files that already exist in your watched folders, because your service may have been stopped before finishing the queue (if it's written properly this SHOULD be possible) or files may. Register-ObjectEvent -InputObject $FileSystemWatcher -EventName Changed -Action $Action -SourceIdentifier FSChange Register-ObjectEvent -InputObject $FileSystemWatcher -EventName Created -Action $Action -SourceIdentifier FSCreate Register-ObjectEvent -InputObject $FileSystemWatcher -EventName Deleted -Action $Action -SourceIdentifier FSDelete Register-ObjectEvent -InputObject $FileSystemWatcher -EventName Renamed -Action $Action -SourceIdentifier FSRename EnableRaisingEvents = $true # define the code that should execute when a file change is detected IncludeSubdirectories = $true # make sure the watcher emits events Path = $PathToMonitor $FileSystemWatcher. $PathToMonitor = "c:\test" explorer $PathToMonitor $FileSystemWatcher = New-Object System.IO.FileSystemWatcher $FileSystemWatcher. # make sure you adjust this to point to the folder you want to monitor So even if your script is busy processing a filesystem change, it should continue to log new filesystem changes and process them once PowerShell is done processing previous changes. To use the FileSystemWatcher correctly, you should use it asynchronously and make sure it uses a queue. In the previous tip we introduced the FileSystemWatcher and illustrated how it can miss filesystem changes when your handler code takes too long.
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