How to pass parameters to a custom ActionFilter in ASP.NET MVC 2?

Question

I\'m trying to create a custom ActionFilter which operates on a set of parameters that would be passed to it from the controller.

So far, my customer ActionFilter lo

Answer 1

Attributes are essentially metadata added to a type. They can only use const values, instead of instance variables. In your case you are tying to pass in your instance variables of genisisRepository, etc. This will fail to compile as they are not compile time constants.

You should look into Dependency Injection for Action Filters to achieve this, typically using an IoC container.

Also, if your ActionFilter is performing a post ActionResult action, such as OnActionExecuted, you could probably get away with storing something in the route data:

public ActionResult Index()
{
  ControllerContext.RouteData.DataTokens.Add("name", "value");
  return View();
}