Introduction

• Authorization filters – They run first to determine whether a user is authorized for the current request.
• Resource filters – They run right after the authorization filters and are very useful for caching and performance.
• Action filters – They run right before and after action method execution.
• Exception filters – They are used to handle exceptions before the response body is populated.
• Result filters – They run before and after the execution of the action methods result.

the action filter can be added to different scope levels: Global, Action, and Controller.