![]() I found this particularly irritating since they provided eight notification filters to make the FileSystemWatcher send the Changed event. My primary issue is that the FileSystemWatcher allows you to be notified that a file in a folder has changed, but not precisely what change was made. It was then, that the thought occurred to me that these FileSystemWatcher problems have never really be addressed (that I could find). A day or so ago, someone posted a question regarding a similar task, and I immediately suggested the same route I had taken. I became immediately aware of the shortcomings of the FileSystemWatcher class, and those shortcomings have always kind stuck to my brain. One of my first official tasks as a DotNet programmer was to write a Windows Service which monitored a folder on a server for new files, processed those files, and then transferred them to another server (via FTP). In this code, the FileSystemWatcher is listening only for a creation event however, other events are available, as well, such as Deleted and Renamed.View Part 2 of this article series. ![]() / Description of the type of files and folder location – / If TRUE: the file type and folder will be monitored / Arbitrary number (for instance 001, 002, and so on) / Unique identifier of the combination File type/folder. ![]() / folder to be monitored by the File System Watcher / This class defines an individual type of file and its associated Figure 1 shows the code that defines that class.įigure 1 Definition of the CustomFolderSettings Class /// The Structure of Customized Folder Settingsīecause I plan to deserialize the XML settings file into a well-structured C# class, the first component of the application must be the definition of the parameters FileSystemWatcher requires to operate. ![]() In this way, all the changes can be easily achieved simply by updating an XML file and restarting the Windows service.įor simplicity’s sake, I’m not going to explain the details about how to run this C# console application as a Windows service, but many resources are available online regarding this matter. In this article I explore how to write an application that uses the FileSystemWatcher class just once, but then, via XML serialization, allows further modifications to the application’s settings, such as folder names, file extensions and actions to be executed upon raising an event. Unless you’re sure your application will hardly ever change those settings, a better idea is to implement a mechanism that can change the configuration without modifying the source code. However, including those parameters in your source code isn’t a good approach because they won’t help when the application needs to include new folders and file extensions, which, moreover, will require coding, building and redeployment. This class is able to detect events in the file system, such as create, modify, or delete files and folders it’s fully customizable and its constructor accepts parameters like folder location and file extension to listen for, and a Boolean parameter to specify whether the listening process should work recursively through the folder structure. NET Framework since version 1.1, and according to its official definition ( bit.ly/2b8iOvQ), it “listens to the file system change notifications and raises events when a directory, or file in a directory, changes.” The FileSystemWatcher class is a very powerful tool that’s been a part of the Microsoft. Volume 31 Number 10 Create a Customizable FileSystemWatcher Windows Service ![]()
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