ASP MVC Cookies not persisting

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 Request, 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

Quote from the article in case the link goes down again ….

The short explanation, if you don’t
like to read the entire story

If you use code like “if
(Response.Cookies[“mycookie”] != null)
{ … }”, ASP.Net automatically
generates a new cookie with the name
“mycookie” in the background and
overwrites your old cookie! Always use
the Request.Cookies-Collection to read
cookies!

[ More detail in the article ]