If I define an Action filter that implements IActionFilter like so: public class FooAttribute

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Asked: June 4, 20262026-06-04T04:33:48+00:00 2026-06-04T04:33:48+00:00

If I define an Action filter that implements IActionFilter like so: public class FooAttribute

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If I define an Action filter that implements IActionFilter like so:

public class FooAttribute : FilterAttribute, IActionFilter
{
    public void OnActionExecuted(ActionExecutedContext filterContext)
    { }

    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        filterContext.Result = new ContentResult 
        { 
            Content = "Test", 
            ContentEncoding = Encoding.UTF8, 
            ContentType = "text" 
        };
    }
}

And apply it to the following action method:

[Foo]
public ActionResult Index()
{
    return View();
}

When I do this the Index action code does not run and neither does the OnResultExecuted method. Is this because I set the Result property in the OnActionExecuting method? Are there any other things that will cause the normal flow to be interrupted?