What are global filters in ASP.NET MVC?
Global filters in ASP.NET MVC are filters that are applied to all actions in a controller or all controllers in an application. They can be used for cross-cutting concerns like authentication, logging, and error handling.
How do I implement a global filter?
To implement a global filter, you can register it in the FilterConfig.cs
file within the App_Start
folder. You would typically add your filter to the GlobalFilters.Filters
collection.
Can I create a custom global filter?
Yes, you can create a custom global filter by implementing the IActionFilter
or IResultFilter
interface and then registering it in the FilterConfig
.
What are some common use cases for global filters?
Common use cases include enforcing authentication, logging requests, handling exceptions, and applying caching policies.
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