How to access Request.Properties in ActionExecutingContext

Question

. 。 Answers to this question are eligible for a +50 reputation bounty. Ryan The Leach is looking for a to this question: ：

Looking for an answer that actually uses the namespace in the original question. OR explains if you can mix and match mvc filters and http filter actionFilters...

How to access Request.Properties in ActionExecutingContext ?

public class UserFilter : ActionFilterAttribute
{
    public void OnActionExecuting(ActionExecutingContext actionContext)
    {
        // Properties is not part of the Request here, so I can't access it
        // Here Request is of type System.Web.HttpRequestBase
        actionContext.HttpContext.Request.Properties.Add("UserData", new UserData());
    }
}

I can do it in ApiController :

public class HomeController : ApiController
{
    public HomeController()
    {
        // Here I can do it (here Request is of type
        // System.Net.Http.HttpRequestMessage
        this.Request.Properties.Add("UserData", new UserData());
    }
}

Answer 1

For ApiController you need use another ActionFilterAttribute (located in System.Web.Http.Controllers namespace):

    using System.Web.Http.Controllers;
    using System.Web.Http.Filters;

    public class UserFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext actionContext)
        {
                    // Properties is part of the Request here, you can access it
                    // actionContext.Request.Properties
        }
    }

Answer 2

actionContext.ActionDescriptor.Properties.Add("UserData", new UserData());