The FileSystemWatcher class in the System.IO namespace can be used to monitor changes to the file system. It watches a file or a directory in your system for changes and triggers events when changes occur. 

This release contains a number of significant changes, including a transition to Swagger/OpenAPI v3 and support for ASP.NET Core 3.0, and will require modifications to your application setup if you're upgrading from previous major versions. 

WebAPIContrib is a collection of open source projects to help improve your work with ASP.NET Web API. We have divided the projects into a few different categories. For more information on each project, click through to visit the GitHub page.