Tengo una curiosidad relacionada con el cambio de cultura en MVC. Lo intenté de 2 maneras, pero aparentemente me equivoqué en alguna parte.

En mi Web.config tengo:

 <globalization uiCulture="auto" culture="auto" />

Así es como traté de cambiar la cultura del hilo:

 <li>@Html.ActionLink("Eng", "ChangeCulture", "Home", new { lang="en-US"}, new { @class = "languageSelectorEnglish" })</li>

Primer metodo

Tengo el siguiente controlador:

    public void ChangeCulture(string lang)
    {
        Thread.CurrentThread.CurrentCulture = CultureInfo.GetCultureInfo(lang);
        Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo(lang);

        Response.Cookies.Remove("Language");
        var langCookie = new HttpCookie("Language");
        langCookie["Language"] = lang;
        langCookie.Value = lang;
        langCookie.Expires = System.DateTime.Now.AddDays(21);
        Response.Cookies.Add(langCookie);

        Response.Redirect(Request.UrlReferrer.ToString());
    }

Segundo metodo

    public ActionResult ChangeCulture(string lang)
    {
        Thread.CurrentThread.CurrentCulture = CultureInfo.GetCultureInfo(lang);
        Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo(lang);

        // Split the url to url + query string
        var fullUrl= Request.UrlReferrer.ToString();
        var questionMarkIndex = fullUrl.IndexOf('?');
        string queryString = null;
        string url = fullUrl;
        if (questionMarkIndex != -1) // There is a QueryString
        {
            url = fullUrl.Substring(0, questionMarkIndex);
            queryString = fullUrl.Substring(questionMarkIndex + 1);
        }

        // Arranges
        var request = new HttpRequest(null, url, queryString);
        var response = new HttpResponse(new StringWriter());
        var httpContext = new HttpContext(request, response);

        var routeData = RouteTable.Routes.GetRouteData(new HttpContextWrapper(httpContext));

        // Extract the data    
        var values = routeData.Values;
        var controllerName = values["controller"];
        var actionName = values["action"];
        var areaName = values["area"];

        return RedirectToAction(actionName.ToString());
    }

Donde me equivoco Gracias.