Create a custom action filter in ASP.NET Core MVC You can take advantage of custom action filters to execute reusable code before or after the execution of an action method.

ASP.NET Core MVC contains many built-in filters. Since each filter has a distinct purpose, they are executed at different stages in the filter pipeline.

Here's how to combine adding HandleError attributes to your ASP.NET MVC application both through Global Filters and adding them directly to your Action methods.