C#微信公众号——自定义菜单

自定义菜单最多包括3个一级菜单，每个一级菜单最多包含5个二级菜单。一级菜单最多4个汉字，二级菜单最多7个汉字，多出来的部分将会以“...”代替。
自定义菜单的介绍，可以看官方开发文档http://mp.weixin.qq.com/wiki/home/index.html
下面是我自己写的一个实现自定义菜单的小Dome
一、先定义了一个Json字符串，格式要按照微信提供的Json格式

        //创建微信菜单JSON字符串
        private string GetWXMenuStr()
        {
            string weixin1 = "";
            weixin1 += "{
";
            weixin1 += ""button":[
";
            weixin1 += "{
";
            // weixin1 += ""type":"click",
";
            //第一个菜单
            weixin1 += ""name":"公共信息",
";
            weixin1 += ""sub_button":[
";


            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"通知公告",
";
            weixin1 += ""key":"11"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"工作动态",
";
            weixin1 += ""key":"12"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"政策法规",
";
            weixin1 += ""key":"13"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"经济视野",
";
            weixin1 += ""key":"14"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"专题报道",
";
            weixin1 += ""key":"15"
";
            weixin1 += "}]
";
            weixin1 += "},
";
            //第二个菜单
            weixin1 += "{
";
            //weixin1 += ""type":"click",
";
            weixin1 += ""name":"公共服务",
";
            weixin1 += ""sub_button":[
";
            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"企业之窗",
";
            weixin1 += ""key":"21"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"金融服务",
";
            weixin1 += ""key":"22"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"创业指导",
";
            weixin1 += ""key":"23"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"管理服务",
";
            weixin1 += ""key":"24"
";
            weixin1 += "},
";

            weixin1 += "{
";
            weixin1 += ""type":"click",
";
            weixin1 += ""name":"法律服务",
";
            weixin1 += ""key":"25"
";
            weixin1 += "}]
";
            weixin1 += "},
";
            //第三个菜单(view类型的)
            weixin1 += "{
";
            weixin1 += ""name":"互动交流",
";
            weixin1 += ""sub_button":[
";
            weixin1 += "{
";
            weixin1 += ""type":"view",
";
            weixin1 += ""name":"注册",
";
            weixin1 += ""url":"http://1532618rl0.iok.la/Register.aspx"
";
            weixin1 += "},
";



            weixin1 += "{
";
            weixin1 += ""type":"view",
";
            weixin1 += ""name":"登录",
";
            weixin1 += ""url":"http://1532618rl0.iok.la"
";
            weixin1 += "}]
";
            weixin1 += "}
";
            weixin1 += "}]
";

            weixin1 += "}
";
            return weixin1;
        }

二、定义执行菜单请求方法

        /// <summary>
        /// 执行菜单请求
        /// </summary>
        /// <param name="url">微信提供的自定义菜单接口地址</param>
        /// <param name="postData">实现自定义菜单的Json字符串</param>
        public void PostMenuData(string url, string postData)
        {
            Stream outstream = null;
            Stream instream = null;
            StreamReader sr = null;
            HttpWebResponse response = null;
            HttpWebRequest request = null;
            Encoding encoding = Encoding.UTF8;
            byte[] data = encoding.GetBytes(postData);
            // 准备请求...
            try
            {
                // 设置参数
                request = WebRequest.Create(url) as HttpWebRequest;
                CookieContainer cookieContainer = new CookieContainer();
                request.CookieContainer = cookieContainer;
                request.AllowAutoRedirect = true;
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = data.Length;
                outstream = request.GetRequestStream();
                outstream.Write(data, 0, data.Length);
                outstream.Close();
                //发送请求并获取相应回应数据
                response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序才开始向目标网页发送Post请求
                instream = response.GetResponseStream();
                sr = new StreamReader(instream, encoding);
                //返回结果网页（html）代码
                string content = sr.ReadToEnd();
                string err = string.Empty;
            }
            catch (Exception ex)
            {
                string err = ex.Message;
            }
        }

三、实现自定义菜单

       private string postUrl = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=";
        //创建自定义菜单
        public void CreateWxMenu()
        {
            string weixin1 = GetWXMenuStr();//获取菜单Json字符串
            string AccessToken = Helper.IsExistAccess_Token();//获取AccessToken
            PostMenuData(postUrl + AccessToken, weixin1);//通过接口实现自定义菜单
        }

四、在程序运行的起始页调用CreateWxMenu()方法即可。

其中获取AccessToken的方法是调用前面写的文章封装的一个Helper方法实现的，地址http://www.cnblogs.com/zhangjd/p/5694737.html