Check if Cookie Exists

Question

From a quick search on Stack Overflow I saw people suggesting the following way of checking if a cookie exists:

HttpContext.Current.Response.Cookies         


        

Answer 1

public static class CookieHelper
{
    /// 

    /// Checks whether a cookie exists.
    /// 
    /// A CookieCollection, such as Response.Cookies.
    /// The cookie name to delete.
    /// A bool indicating whether a cookie exists.
    public static bool Exists(this HttpCookieCollection cookieCollection, string name)
    {
        if (cookieCollection == null)
        {
            throw new ArgumentNullException("cookieCollection");
        }

        return cookieCollection[name] != null;
    }
}

Usage:

Request.Cookies.Exists("MyCookie")