ASP MVC Cookies not persisting

Question

I have a ASP MVC App with some seemingly simple code to save and retrieve cookies but for some reason they won't persist. The code in the controller is :

if (System.Web.HttpContext.Current.Response.Cookies["CountryPreference"] == null)
{
    HttpCookie cookie = new HttpCookie("CountryPreference");
    cookie.Value = country;
    cookie.Expires = DateTime.Now.AddYears(1);
    System.Web.HttpContext.Current.Response.Cookies.Add(cookie);
}

And to load it again :

if (System.Web.HttpContext.Current.Request.Cookies["CountryPreference"] != null)
{
    System.Web.HttpContext.Current.Request.Cookies["CountryPreference"].Expires = DateTime.Now.AddYears(1);
    data.Country = System.Web.HttpContext.Current.Request.Cookies["CountryPreference"].Value;
}

For some reason the cookie is always null?

Answer 1

Your code looks fine, the only thing is that you can not change the expires in the request collection.

Anyway, this is the code I use (in VB)

 Dim cookie As HttpCookie
 cookie = Current.Request.Cookies.Get("CountryPreference")
 If not cookie Is Nothing Then
    CountryID = CType(cookie.Value, Integer)
 end if

It only changes the .get part, but it should be the same.

Answer 2

The problem lies in following code:

if (System.Web.HttpContext.Current.Response.Cookies["CountryPreference"] == null)

When you try to check existence of a cookie using Response object rather than Reqest, ASP.net automatically creates a cookie.

Check this detailed post here. http://chwe.at/blog/post/2009/01/26/Done28099t-use-ResponseCookiesstring-to-check-if-a-cookie-exists!.aspx