![]() Now that the FileSystemWatcher is configured, we need to tell it what to do when a change is detected. Read: How to Work with Serilog in C# and ASP.NET Working with Events in C# For example, to be notified about changes to file names and attributes, you would use the following C# code: FileSystemWatcher fileSystemWatcher = new FileSystemWatcher() įileSystemWatcher.NotifyFilter = NotifyFilters.FileName | NotifyFilters.Attributes Note that you can choose to be notified for several changes to the file system as well. The NotifyFilter property can be used to specify which types of changes you want to be notified about. The following code example shows how to configure FileSystemWatcher in C#: FileSystemWatcher fileSystemWatcher = new FileSystemWatcher() įileSystemWatcher.IncludeSubdirectories = true You can also set the IncludeSubdirectories property to true if you are going to watch for changes in subdirectories. To do this, you need to set the Path property to the path of the file or folder you want to watch and set the Filter property to the type of file you want to watch. Once you have an instance of the FileSystemWatcher class, you can configure it to watch for changes to specific files or folders. Configuring FileSystemWatcher to Watch for Changes We demonstrate how to do this in the following sections. The FileSystemWatcher class in C# makes it easy to detect file system changes in your code – all programmers need to do is set up a watcher and handle the Changed, Created, and Deleted events. Read: Project Management Software for Developers The FileSystemWatcher Class in C#Īs mentioned, you can monitor changes to your file system and take appropriate action using the FileSystem Watcher class it is a great way to keep track of what’s going on in your file system and ensure that your data is always up-to-date. These methods provide a lower-level way of monitoring changes and require more manual processing than the FileSystemWatcher class. This class allows coders to specify which directory they want to monitor and provides events that a programmer can handle when changes occur.Īnother option is to use the FindFirstChangeNotification and FindNextChangeNotification methods. One such way is to use the FileSystemWatcher class. There are a few different ways to detect file system changes in C#. Or, you may want to track changes to a configuration file so you can reload it if necessary. For example, a developer may want to monitor a directory for new files and process them accordingly. ![]() Changes can also occur in the file system’s structure, such as when a directory is renamed or moved.ĭetecting file system changes can be necessary for several reasons. This can happen when a file or a directory is created, modified, or deleted. Many file systems exist, such as FAT, NTFS, Unix, HFS+, etc.Ī file system change is an event that occurs when the status of a file system changes. Each file system has its way of organizing files and has different capabilities and features. In other words, it represents the basic structure that an operating system uses to store, manage, and keep track of files on a storage device, such as a hard drive. Read: C# Tools for Code Quality What is a File System and What are File System Changes?Ī file system defines how the operating system organizes the files and folders in a disk. This C# programming tutorial presents a discussion on the file system, why it is important, file system changes, and how to use the FileSystemWatcher class to detect file system changes with C#. You can use it to monitor the file system for changes by monitoring a single file, a directory, or even all files inside a directory. Programmers can take advantage of the FileSystemWatcher class in C# to monitor file system changes and trigger events. When working with files, developers might often want to detect changes in the file system so that appropriate action can be taken. ![]() For example, you can create, modify, rename, and delete files and directories easily. The C# programming language provides several methods for working with files and directories. ![]()
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