.NET MVC Write Cookie from ActionFilter

I built an ActionFilter to host a page hit logger on my MVC site and have the need to save some values into cookie. I've used the following code to write the cookie: ``` public class LogRequestAttribute : ActionFilterAttribute, IActionFilter { void IActionFilter.OnActionExecuting(ActionExecutingContext filterContext) { if(filterContext.HttpContext.Request.UserHostAddress != "127.0.0.1") ThreadPool.QueueUserWorkItem(delegate { string adid = filterContext.HttpContext.Request.QueryString["adid"] != null ? (string)filterContext.HttpContext.Request.QueryString["adid"] : string.Empty; if (!String.IsNullOrEmpty(adid)) { HttpCookie cookie = new HttpCookie("adid", adid); cookie.Expires = DateTime.Now.AddDays(30); filterContext.HttpContext.Response.Cookies.Add(cookie); } DomainModel.Concrete.SqlPageHitActivity logger = new DomainModel.Concrete.SqlPageHitActivity( System.Configuration.ConfigurationManager.ConnectionStrings["TrackingConnectionString"].ConnectionString); DomainModel.Entities.PageHitActivity hit = new DomainModel.Entities.PageHitActivity { AdIdentifier = filterContext.HttpContext.Response.Cookies["adid"].Value == null ? string.Empty : filterContext.HttpContext.Response.Cookies["adid"].Value, Authenticated = filterContext.HttpContext.Request.IsAuthenticated, Browser = filterContext.HttpContext.Request.UserAgent, CookieId = string.Empty, Parameters = string.Empty, Referer = filterContext.HttpContext.Request.UrlReferrer == null ? string.Empty : filterContext.HttpContext.Request.UrlReferrer.ToString(), RequestDate = DateTime.Now, RequestorIP = filterContext.HttpContext.Request.UserHostAddress, SessionId = string.Empty, SiteId = 1, Target = filterContext.HttpContext.Request.Url != null ? filterContext.HttpContext.Request.Url.AbsoluteUri : string.Empty, UserId = filterContext.HttpContext.Request.IsAuthenticated ? filterContext.HttpContext.User.Identity.Name : string.Empty }; logger.LogHit(hit); }); } } ``` The cookie seems to appear in the collection but is not available when a subsequent page hit is logged. Thanks, Chris