ASP MVC Cookies not persisting

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?

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

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 ]

Method 2

In resume, don’t use “Response” to read cookies, use “Request“.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0