/// <summary>

        /// 生成手机端二维码

        /// </summary>

        /// <param name=“preAuthCode”></param>

        /// <param name=“authType”>1公众号、2小程序、3公众号，小程序</param>

        /// <returns></returns>

        public static string GenerateQrCode(string preAuthCode, int authType = 1)

        {

            var url = “https://mp.weixin.qq.com/safe/bindcomponent?action=bindcomponent&auth_type=1&no_scan=1&component_appid=” + Config.ServerAppID

                + “&pre_auth_code=” + preAuthCode + “&redirect_uri=https://pinchezhijia.com/WeChatApi/PostAuth_code&auth_type=” + authType + “#wechat_redirect”;

            return url;

        }