/// <summary>
        /// 创建菜单
        /// </summary>
        /// <param name="accessToken"></param>
        /// <param name="buttonData">菜单内容</param>
        /// <returns></returns>
        public static WxJsonResult CreateMenu(string accessToken, ButtonGroup buttonData)
        {
            JavaScriptSerializer js = new JavaScriptSerializer();
            var jsonString = js.Serialize(buttonData);
            CookieContainer cookieContainer = null;// new CookieContainer();

            using (MemoryStream ms = new MemoryStream())
            {
                var bytes = Encoding.UTF8.GetBytes(jsonString);
                ms.Write(bytes, 0, bytes.Length);
                ms.Seek(0, SeekOrigin.Begin);

                var url = string.Format("https://api.weixin.qq.com/cgi-bin/menu/create?access_token={0}", accessToken);
                var result = Post.PostGetJson<WxJsonResult>(url, cookieContainer, ms);
                return result;
            }
        }
        /// <summary>
        /// 根据微信返回的Json数据得到可用的GetMenuResult结果
        /// </summary>
        /// <param name="resultFull"></param>
        /// <returns></returns>
        public static GetMenuResult GetMenuFromJsonResult(GetMenuResultFull resultFull)
        {
            GetMenuResult result = null;
            try
            {
                //重新整理按钮信息
                ButtonGroup bg = new ButtonGroup();
                foreach (var rootButton in resultFull.menu.button)
                {
                    if (rootButton.name == null)
                    {
                        continue;//没有设置一级菜单
                    }
                    var availableSubButton = rootButton.sub_button.Count(z => !string.IsNullOrEmpty(z.name));//可用二级菜单按钮数量
                    if (availableSubButton == 0)
                    {
                        //底部单击按钮
                        if (string.IsNullOrEmpty(rootButton.key))
                        {
                            throw new WeixinMenuException("单击按钮的key不能为空!");
                        }

                        bg.button.Add(new SingleButton()
                        {
                            name = rootButton.name,
                            key = rootButton.key,
                         //  type = rootButton.type//目前只有click
                        });
                    }
                    else if (availableSubButton < 2)
                    {
                        throw new WeixinMenuException("子菜单至少需要填写2个!");
                    }
                    else
                    {
                        //底部二级菜单
                        var subButton = new SubButton(rootButton.name);
                        bg.button.Add(subButton);

                        foreach (var subSubButton in rootButton.sub_button)
                        {
                            if (subSubButton.name == null)
                            {
                                continue; //没有设置菜单
                            }

                            if (string.IsNullOrEmpty(subSubButton.key))
                            {
                                throw new WeixinMenuException("单击按钮的key不能为空!");
                            }

                            subButton.sub_button.Add(new SingleButton()
                            {
                                name = subSubButton.name,
                                key = subSubButton.key,
                                //type = subSubButton.type
                                //目前只有click
                            });
                        }
                    }
                }

                if (bg.button.Count < 2)
                {
                    throw new WeixinMenuException("一级菜单按钮至少为2个!");
                }

                result = new GetMenuResult()
                             {
                                 menu = bg
                             };
            }
            catch (Exception ex)
            {
                throw new WeixinMenuException(ex.Message, ex);
            }
            return result;
        }
 public GetMenuResult()
 {
     menu = new ButtonGroup();
 }