How can I implement custom filters in my MVC application?

How can I implement custom filters in my MVC application?

You can create custom filters in MVC by inheriting from the ActionFilterAttribute class and overriding its methods.

Can you give me an example of a custom action filter?

Sure! Here's a simple example:

public class MyCustomFilter : ActionFilterAttribute {
    public override void OnActionExecuting(ActionExecutingContext filterContext) {
        // Your custom logic here
    }
}

How do I register this filter globally?

You can register it in the FilterConfig.cs file like this:

public static void RegisterGlobalFilters(GlobalFilterCollection filters) {
    filters.Add(new MyCustomFilter());
}

What are some common use cases for custom filters?

Common use cases include logging, authentication, authorization, and modifying the response before it reaches the client.