Cookies操作基类 user管理基类
登录存取的一些基类 和cookies操作 有官网的最好，，要规范的
[解决办法]

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登录存取的一些基类 和cookies操作 有官网的最好，，要规范的

Cookie Helper C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace PAB.Web
{
        public static class CookieUtil
        {

        public static string GetCookieValue (string cookieName)
        {
          string cookieVal = String.Empty;
            cookieVal = HttpContext.Current.Request.Cookies[cookieName].Value;
           return cookieVal;
        }

        public static void CreateCookie (string cookieName, string value, int? expirationDays)
        {
            HttpCookie Cookie = new HttpCookie(cookieName, value);
             if ( expirationDays.HasValue )
                Cookie.Expires = DateTime.Now.AddDays(expirationDays.Value );
             HttpContext.Current.Response.Cookies.Add(Cookie);
        }

         public static void DeleteCookie (string cookieName)
        {
            HttpCookie Cookie = HttpContext.Current.Request.Cookies[cookieName];
             if (Cookie != null)
            {
                Cookie.Expires = DateTime.Now.AddDays(-2);
                 HttpContext.Current.Response.Cookies.Add(Cookie);
             }
        }

        public static bool CookieExists(string cookieName)
        {
            bool exists = false;
            HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
             if (cookie != null)
                exists = true;
            return exists; 
 
        }

         public static Dictionary<string, string> GetAllCookies()
        {
            Dictionary<string, string> cookies = new Dictionary<string, string>();
            foreach (string key in HttpContext.Current.Request.Cookies.AllKeys)
             {
                 cookies.Add(key, HttpContext.Current.Request.Cookies[key].Value);
             }
             return cookies;
        }

         public static void DeleteAllCookies ()
        {
            var x = HttpContext.Current.Request.Cookies;
            foreach (HttpCookie cook in x)
            {
                DeleteCookie(cook.Name);
            }
        }
    }
}

http://www.eggheadcafe.com/tutorials/aspnet/e7108c33-1cc6-48ae-9f65-cc391c8b66a7/aspnet-generic-cookie-utility-class.aspx