读取cookie值总是提示未被实例化

        protected void Page_Load(object sender, EventArgs e)

        {

            if (Request.IsAuthenticated)

            {

                HttpCookie cookies = Request.Cookies["fastuser"];

                if (Request.Cookies[FormsAuthentication.FormsCookieName] != null)

                {

                    //username.Text  = Request.Cookies[FormsAuthentication.FormsCookieName]["receiver"].ToString();

                    username.Text = cookies.Values["receiver"].ToString();

                    //username.Text  = Request.Cookies[FormsAuthentication.FormsCookieName]["receiver"].ToString(); 
                    username.Text = cookies.Values["receiver"].ToString();

以上这两句不管用哪一句都提示“未将对象引用设置到对象的实例“，这是什么原因呢，我在百度里看别人都是直接这么写的，为什么我的就不对吗？新手求指导
------解决方案--------------------
HttpCookie myHc = Request.Cookies["fastuser"];
if (myHc != null)
  {
     username.Text = myHc .Values["receiver"];
  }
LZ试下 话说很久没用过这东西了
------解决方案--------------------
Refer:

http://www.cnblogs.com/insus/articles/2055310.html