写某个网站下的cookie

 public class Common
    {

        public static int WriteCookie(string UserID,string UserName,string UserSort)
        {
            HttpCookie userCookie = new HttpCookie("Coop");
            userCookie.Domain = "e-jjj.com";
            userCookie.HttpOnly = true;
            userCookie["CoopUName"] = UserName;
            userCookie["CoopUID"] = UserID;
            userCookie["UserSort"] = UserSort;
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
            HttpContext.Current.Response.Cookies.Remove("Coop");
            HttpContext.Current.Response.Cookies.Add(userCookie);
            return 1;

        }

        /// <summary>
        /// 登出
        /// </summary>
        public static void SignOut()
        {
                HttpCookie userCookie = new HttpCookie("Coop");
                userCookie.Expires = new System.DateTime(1999, 10, 12);
                userCookie.Domain = "e-jjj.com";
                HttpContext.Current.Response.Cookies.Add(userCookie);
        }

        public static string MD5Encode(string str)
        {
            return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5");
        }
    }