Cookie 类

最近项目中用到cookie，所以就写了个cookie帮助类

public class CookHelper 
    {
        HttpResponseBase Response = null;
        HttpRequestBase Request = null;
        public CookHelper(HttpResponseBase Response, HttpRequestBase Request) 
        {
            this.Response = Response;
            this.Request = Request;
        }

        /// <summary>
        /// 设置cookie
        /// </summary>
        /// <param name="key">key</param>
        /// <param name="value">value</param>
        /// <param name="expiredTime">过期时间</param>
        public void SetCookie(string key, string value,int expiredTime=7)
        {
            Response.Cookies[key].Value = value;
            Response.Cookies[key].Expires = DateTime.Now.AddDays(expiredTime);

            //测试
            //Response.Cookies[key].Expires = DateTime.Now.AddMinutes(2);
        }

        /// <summary>
        /// 获取cookie
        /// </summary>
        /// <param name="key">key</param>
        /// <returns></returns>
        public string GetCookie(string key)
        {
            if (Request.Cookies[key] != null)
            {
                return Request.Cookies[key].Value;
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 删除cookie
        /// </summary>
        /// <param name="key">key</param>
        public void RemoveCookie(string key)
        {
            foreach (string cookiename in Request.Cookies.AllKeys)
            {
                if (cookiename == key)
                {
                    HttpCookie cookies = Request.Cookies[cookiename];
                    if (cookies != null)
                    {
                        cookies.Expires = DateTime.Today.AddDays(-1);
                        Response.Cookies.Add(cookies);
                        Request.Cookies.Remove(cookiename);
                    }
                }
            }  
        }
    }