ASP.NET MVC: How to create an action filter to output JSON?

Question

My second day with ASP.NET MVC and my first request for code on SO (yep, taking a short cut).

I am looking for a way to create a filter that intercepts the current o

Answer 1

You haven't mentioned only returning the JSON conditionally, so if you want the action to return JSON every time, why not use:

public JsonResult Index()
{
    var model = new{ foo = "bar" };
    return Json(model);
}