微信自定义分享

        private void RegisterWeiXinShareScript(Model.pb_user muser)
        {
            string title = "分享链接";
            string img = "图片链接";
            string text = "分享链接，识别二维码注册";
            string url = "http://xxx";

            //公众号的应用ID
            string appid = "appid";
            //公众号的应用密钥
            string secret = "appsecret";

            //生成签名的时间戳
            TimeSpan ts = DateTime.Now - DateTime.Parse("1970-01-01 00:00:00");
            string timestamp = ts.TotalSeconds.ToString().Split('.')[0];
            //生成签名的随机串
            string nonceStr = "654as2df5as2df5aw2";

            //微信access_token，用于获取微信jsapi_ticket
            string token = GetAccess_token(appid, secret);
            //微信jsapi_ticket
            string ticket = GetTicket(token);

            //当前网页的URL
            string pageurl = Request.Url.AbsoluteUri;

            //对所有待签名参数按照字段名的ASCII 码从小到大排序（字典序）后，使用URL键值对的格式（即key1=value1&key2=value2…）拼接成字符串
            string str = "jsapi_ticket=" + ticket + "&noncestr=" + nonceStr + "&timestamp=" + timestamp + "&url=" + pageurl;
            //签名,使用SHA1生成
            string signature = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "SHA1").ToLower();

            //要注册到页面的JS脚本
            StringBuilder sbjsApi = new StringBuilder();
            sbjsApi.Append("<script>");

            //通过config接口注入权限验证配置
            sbjsApi.Append("wx.config({debug:false,");
            sbjsApi.Append("appId: '" + appid + "',");
            sbjsApi.Append("timestamp: " + timestamp + ",");
            sbjsApi.Append("nonceStr: '" + nonceStr + "',");
            sbjsApi.Append("signature: '" + signature + "',");
            sbjsApi.Append("jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage', 'updateAppMessageShareData', 'updateTimelineShareData', 'onMenuShareWeibo']});");

            //通过ready接口处理成功验证
            sbjsApi.Append("wx.ready(on_weixin_ready);");
            sbjsApi.Append("function on_weixin_ready() {weixin_share();}");

            sbjsApi.Append("function weixin_share(){");
            //获取“分享给朋友”按钮点击状态及自定义分享内容接口
            sbjsApi.Append("wx.onMenuShareAppMessage({");
            sbjsApi.Append("title:'" + title + "',");
            sbjsApi.Append("desc:'" + text + "',");
            sbjsApi.Append("link:'" + url + "',");
            sbjsApi.Append("imgUrl:'" + img + "',");
            sbjsApi.Append("type:'link',");
            sbjsApi.Append("dataUrl:'',");
            sbjsApi.Append("success: function () { },");
            sbjsApi.Append("cancel:function () {}");
            sbjsApi.Append("});");

            //获取“分享到朋友圈”按钮点击状态及自定义分享内容接口
            sbjsApi.Append("wx.onMenuShareTimeline({");
            sbjsApi.Append("title:'" + title + "',");
            sbjsApi.Append("link:'" + url + "',");
            sbjsApi.Append("imgUrl:'" + img + "',");
            sbjsApi.Append("success: function () {},");
            sbjsApi.Append("cancel:function () {}");
            sbjsApi.Append("});");

            //自定义“分享给朋友”及“分享到QQ”按钮的分享内容（1.4.0）
            sbjsApi.Append("wx.updateAppMessageShareData({");
            sbjsApi.Append("title:'" + title + "',");
            sbjsApi.Append("desc:'" + text + "',");
            sbjsApi.Append("link:'" + url + "',");
            sbjsApi.Append("imgUrl:'" + img + "',");
            sbjsApi.Append("success: function () { },");
            sbjsApi.Append("cancel:function () {}");
            sbjsApi.Append("});");

            //自定义“分享到朋友圈”及“分享到QQ空间”按钮的分享内容
            sbjsApi.Append("wx.updateTimelineShareData({");
            sbjsApi.Append("title:'" + title + "',");
            sbjsApi.Append("desc:'" + text + "',");
            sbjsApi.Append("link:'" + url + "',");
            sbjsApi.Append("imgUrl:'" + img + "',");
            sbjsApi.Append("success: function () { },");
            sbjsApi.Append("cancel:function () {}");
            sbjsApi.Append("});");

            //获取“分享到腾讯微博”按钮点击状态及自定义分享内容接口
            sbjsApi.Append("wx.onMenuShareWeibo({");
            sbjsApi.Append("title:'" + title + "',");
            sbjsApi.Append("desc:'" + text + "',");
            sbjsApi.Append("link:'" + url + "',");
            sbjsApi.Append("imgUrl:'" + img + "',");
            sbjsApi.Append("success: function () { },");
            sbjsApi.Append("cancel:function () {}");
            sbjsApi.Append("});");

            sbjsApi.Append("}");
            sbjsApi.Append("</script>");

            Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "weixin", sbjsApi.ToString().Trim());
        }

 

 其中需要去获取token,ticket

/// <summary>
        /// 获取微信access_token
        /// </summary>
        /// <param name="appid">公众号的应用ID</param>
        /// <param name="secret">公众号的应用密钥</param>
        /// <returns>access_token</returns>
        private string GetAccess_token(string appid, string secret)
        {
            string tokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
            string jsonresult = HttpGet(tokenUrl, "UTF-8");
            WX_Token wx = JsonDeserialize<WX_Token>(jsonresult);
            return wx.access_token;
        }

        /// <summary>
        /// JSON反序列化
        /// </summary>
        /// <typeparam name="T">实体类</typeparam>
        /// <param name="jsonString">JSON</param>
        /// <returns>实体类</returns>
        private T JsonDeserialize<T>(string jsonString)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T obj = (T)ser.ReadObject(ms);
            return obj;
        }

/// <summary>
        /// 获取微信jsapi_ticket
        /// </summary>
        /// <param name="token">access_token</param>
        /// <returns>jsapi_ticket</returns>
        public string GetTicket(string token)
        {
            string ticketUrl = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + token + "&type=jsapi";
            string jsonresult = HttpGet(ticketUrl, "UTF-8");
            WX_Ticket wxTicket = JsonDeserialize<WX_Ticket>(jsonresult);
            return wxTicket.ticket;
        }

  注意在加载页面就需加载代码，微信点击右上角就可分享自定义的内容，其中js需看是否是title，desc等，以免读取不了东西

在加载代码的前提需要在前端添加：<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.4.0.js" ></script>

不然一切都无果！