Custom Action Filter ASP.NET MVC 4

Question

This thing is killing me. Basically what I have is the custom ActionFilter (Class which Inherits from ActionFilterAttribute and implements IActionFilter). it looks like this

public class ValidationFilterAttribute : ActionFilterAttribute, IActionFilter
{
    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        // do some stuff here
    }
}

this is what FilterConfig looks like

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
        filters.Add(new ValidationFilterAttribute());
    }
}

But whenever I start the project there is an exception saying following

The given filter instance must implement one or more of the following filter interfaces: IAuthorizationFilter, IActionFilter, IResultFilter, IExceptionFilter.

But obviously the ValidationFilterAttribute implements one of those interfaces. Am I missing something very basic here? I can't figure out what is wrong.

Roy Dictus · Accepted Answer · 2013-11-19 13:20:08Z

8

Prefix your base class with System.Web.Mvc, I have a "hunch" you may be using System.Web.Http.Filters.ActionFilterAttribute instead.

So then you would have to override

OnActionExecuting(ActionExecutingContext filterContext)

And things will be OK.

And as you can see, ActionFilterAttribute implements IActionFilter already, so you don't need to specify it.

answered Nov 19, 2013 at 13:20

Roy Dictus

33.3k9 gold badges64 silver badges77 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Romias · Accepted Answer · 2013-11-19 13:19:04Z

1

As far as I know, you don't need the IActionFilter declaration. ActionFilterAttribute already implements IActionFilter

But I don't know if this is the cause of the error message. Could you try removing it?

Check this also: http://forums.asp.net/t/1835666.aspx

answered Nov 19, 2013 at 13:19

Romias

14.2k7 gold badges61 silver badges89 bronze badges

Comments

luk2302 · Accepted Answer · 2015-06-09 18:05:58Z

0

[Serializable] public class RedirectingAction : ActionFilterAttribute
{ 
    public override void OnActionExecuting(ActionExecutingContext context) { base.OnActionExecuting(context); 

}

after that use this attributes in your controller like below

[RedirectingAction] 
public class HomeController : BaseController { }

custom action filter example by www.jkittraining.com www.jkittraining.com/course/asp-net-mvc-training/

edited Jun 9, 2015 at 18:05

luk2302

57.5k24 gold badges108 silver badges151 bronze badges

answered Jun 9, 2015 at 18:00

JKITTRaining

12 bronze badges

Collectives™ on Stack Overflow

Custom Action Filter ASP.NET MVC 4

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related