/// <summary>
        /// 是否关注微信公众号。
        /// </summary>
        /// <returns></returns>
        public static bool IsSubscribe(string openid)
        {
            var token = AuthBase.GetBaseAccessToken();

            if (token == null || string.IsNullOrEmpty(token.access_token))
            {
                return(false);
            }

            var weChatUser = AuthBase.GetBaseWeChatUserInfo(token.access_token, openid);

            if (weChatUser == null || weChatUser.subscribe < 1)
            {
                return(false);
            }

            return(true);
        }