asp.net微信开发第七篇----高级群发(图文)

上一篇介绍了如何群发文本消息，本篇将介绍如何群发图文信息，上传图文信息所需的素材，界面如下：

我们先看从素材库中获取图文素材的代码，界面：

素材列表，我是使用的repeater控件，

前台代码如下：

  <!--弹出选择素材窗口-->
         <div id="shownewgroup">
            <div class="closeLogin" style="height:40px; background-color:#ddd9ff; line-height:40px;"><span style="float:left; color:#000; font-size:14px; text-indent:5px;">选择素材</span>
                <span style="float:left;margin-left:20px;"><a href="WxNewTuWen.aspx" style="color:red;" onclick="hrefurl();" class="hrefurl">新建图文素材</a></span>
                <a class="closeloginpage"><img src="data:images/close1.png" alt="" /></a>&nbsp;&nbsp;</div>

            <div style="height:455px; width:100%;">
                <asp:UpdatePanel ID="UpdatePanel2" runat="server">
                    <ContentTemplate>
                         <div style="width:100%; height:35px; margin:10px;"><asp:LinkButton ID="LinkBtnSelect" runat="server" OnClick="LinkBtnSelect_Click" ><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; float:left; line-height:35px; font-weight:bold; text-align:center;color:#fff;">确认选择</div></asp:LinkButton>
                             <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkbtnRefresh" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkbtnRefresh_Click"><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">刷新</div></asp:LinkButton></span>
                            <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkBtnDelete" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkBtnDelete_Click"><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">删除素材</div></asp:LinkButton></span>
                         </div>
                <div style="word-wrap:break-word;" id="lbnewssucai" runat="server">
                    <asp:Repeater ID="Repeatersucailist" runat="server" OnItemDataBound="Repeatersucailist_ItemDataBound">
                        <ItemTemplate>
                           <table style="width:100%; border-top:1px solid #edc9df; border-collapse:collapse; font-size:12px;" >
                               <tr>
                                   <td style="width:100px;"><asp:Image ID="ImageUrl" CssClass="fenmianstyle2" runat="server" /></td>
                                   <td style="text-align:left; width:470px; ">
                                       <asp:Repeater ID="Repeatersucailist2" runat="server">
                                           <ItemTemplate>
                                               <ul style="margin:0px;padding:0px;">
                                                   <li><%# Eval("title") %></li>
                                               </ul>
                                           </ItemTemplate>
                                       </asp:Repeater>
                                   </td>
                                   <td style="width:130px;">
                                       <asp:Label ID="lbUpate_time" runat="server" Text="Label"></asp:Label>
                                   </td>
                                   <td style="width:50px; text-align:center;">
                                       <asp:CheckBox ID="CheckIn" runat="server" />
                                       <asp:Label ID="lbmedia_id" runat="server" Visible="false" Text=""></asp:Label>
                                   </td>
                               </tr>
                           </table>
                        </ItemTemplate>
                    </asp:Repeater>
                    <div style="font-size:14px; height:30px; line-height:30px; text-indent:10px; border-top:1px solid #ced9df;">
                        <span style="float:left;">本类型素材总数量为：</span><span style="float:left; color:red;"><asp:Label ID="lbtotal_count" runat="server" Text=""></asp:Label></span>&nbsp;&nbsp;
                        <span style="float:left; margin-left:20px;">本次获取的素材数量为：</span><span style="float:left; color:red;"><asp:Label ID="lbitem_count" runat="server" Text=""></asp:Label></span>
                    </div>
                </div>
                    </ContentTemplate>
                </asp:UpdatePanel>
            </div>
        </div>
        <div id="shownewgroupzhezhaoceng"></div>

后台代码如下：

 /// <summary>
        /// 绑定图文素材列表
        /// </summary>
        private void BindNewsSucaiList()
        {
            WeiXinServer wxs = new WeiXinServer();
            string res = "";

            ///从缓存读取accesstoken
            string Access_token = Cache["Access_token"] as string;

            if (Access_token == null)
            {
                //如果为空，重新获取
                Access_token = wxs.GetAccessToken();

                //设置缓存的数据7000秒后过期
                Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
            }

            string Access_tokento = Access_token.Substring(, Access_token.Length - );

            string posturl = "https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=" + Access_tokento;

            //POST数据例子：  POST数据例子：{"type":TYPE,"offset":OFFSET,"count":COUNT}

            string postData = "{\"type\":\"news\",\"offset\":\"0\",\"count\":\"20\"}";

            res = wxs.GetPage(posturl, postData);

            //使用前需要引用Newtonsoft.json.dll文件
            JObject jsonObj = JObject.Parse(res);

            int groupsnum = jsonObj["item"].Count();

            List<WxNewsSucaiIteminfo> newssucaiitemlist = new List<WxNewsSucaiIteminfo>();
            List<WxNewsSuCaiItemlistinfo> WxNewsSuCaiItemlist = new List<WxNewsSuCaiItemlistinfo>();
            for (int i = ; i < groupsnum; i++)
            {
                WxNewsSucaiIteminfo newssucaiitem = new WxNewsSucaiIteminfo();
                newssucaiitem.media_id = jsonObj["item"][i]["media_id"].ToString();
                newssucaiitem.update_time = jsonObj["item"][i]["update_time"].ToString();
                newssucaiitem.total_count = jsonObj["total_count"].ToString();
                newssucaiitem.item_count = jsonObj["item_count"].ToString();

                newssucaiitemlist.Add(newssucaiitem);
                int news_itemcount = jsonObj["item"][i]["content"]["news_item"].Count();
                if (news_itemcount > )
                {
                    for (int j = ; j < news_itemcount; j++)
                    {
                        WxNewsSuCaiItemlistinfo wnscilinfo = new WxNewsSuCaiItemlistinfo();
                        wnscilinfo.title = jsonObj["item"][i]["content"]["news_item"][j]["title"].ToString();
                        wnscilinfo.thumb_media_id = jsonObj["item"][i]["content"]["news_item"][j]["thumb_media_id"].ToString();
                        wnscilinfo.show_cover_pic = int.Parse(jsonObj["item"][i]["content"]["news_item"][j]["show_cover_pic"].ToString());
                        wnscilinfo.author = jsonObj["item"][i]["content"]["news_item"][j]["author"].ToString();
                        wnscilinfo.digest = jsonObj["item"][i]["content"]["news_item"][j]["digest"].ToString();
                        wnscilinfo.content = jsonObj["item"][i]["content"]["news_item"][j]["content"].ToString();
                        wnscilinfo.url = jsonObj["item"][i]["content"]["news_item"][j]["url"].ToString();
                        wnscilinfo.content_source_url = jsonObj["item"][i]["content"]["news_item"][j]["content_source_url"].ToString();
                        wnscilinfo.media_id = newssucaiitem.media_id.ToString();
                        WxNewsSuCaiItemlist.Add(wnscilinfo);
                    }
                }
            }
            Session["WxNewsSuCaiItemlist"] = WxNewsSuCaiItemlist;
            this.Repeatersucailist.DataSource = newssucaiitemlist;
            this.Repeatersucailist.DataBind();
        }

再来看看，新建单图文信息界面：

新建单图文上传封面，删除封面的代码如下：

   /// <summary>
        ///
        /// </summary>上传图片文件
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void LinkBtnFileUploadImg_Click(object sender, EventArgs e)
        {
            if (this.FileUploadImg.HasFile)
            {
                string fileContentType = FileUploadImg.PostedFile.ContentType;
                if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/png" || fileContentType == "image/x-png" || fileContentType == "image/jpeg"
                     || fileContentType == "image/pjpeg")
                {
                    int fileSize = this.FileUploadImg.PostedFile.ContentLength;

                    if (fileSize <=)
                    {
                        string fileName = this.FileUploadImg.PostedFile.FileName;
                        // 客户端文件路径
                        string filepath = FileUploadImg.PostedFile.FileName;  //得到的是文件的完整路径,包括文件名，如：C:\Documents and Settings\Administrator\My Documents\My Pictures\20022775_m.jpg
                        //string filepath = FileUpload1.FileName;               //得到上传的文件名20022775_m.jpg
                        string filename = filepath.Substring(filepath.LastIndexOf("\\") + );//20022775_m.jpg
                        string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg 

                        this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;
                        this.ImgTuWen2.Visible = true;
                        this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;
                        this.FileUploadImg.PostedFile.SaveAs(serverpath);//将上传的文件另存为
                        this.LinkBtnDeleteImg.Visible = true;
                        Session["fileNameimg"] = this.FileUploadImg.PostedFile.FileName;

                        //上传临时图片素材至微信服务器，3天后微信服务器会自动删除

                        WeiXinServer wxs = new WeiXinServer();

                        ///从缓存读取accesstoken
                        string Access_token = Cache["Access_token"] as string;

                        if (Access_token == null)
                        {
                            //如果为空，重新获取
                            Access_token = wxs.GetAccessToken();

                            //设置缓存的数据7000秒后过期
                            Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
                        }

                        string Access_tokento = Access_token.Substring(, Access_token.Length - );

                        //WebClient wx_upload = new WebClient();
                        //wx_upload.Credentials = CredentialCache.DefaultCredentials;
                        string url = string.Format("http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token={0}&type={1}", Access_tokento, "image");

                        string result = HttpUploadFile(url, serverpath);

                        if (result.Contains("media_id"))
                        {
                            //使用前需要引用Newtonsoft.json.dll文件
                            JObject jsonObj = JObject.Parse(result);

                            Session["imgmedia_id"] = jsonObj["media_id"].ToString();
                        }

                        Response.Write("<script>alert('上传图片成功！')</script>");
                    }
                    else
                    {
                        Response.Write("<script>alert('上传文件不能大于2M！')</script>");
                    }

                }
                else
                {
                    Response.Write("<script>alert('只支持BMP,GIF,PNG,JPG格式的图片！')</script>");
                }
            }
            else
            {
                Response.Write("<script>alert('请选择图片！')</script>");
            }
        }
        /// <summary>
        /// Http上传文件
        /// </summary>
        public static string HttpUploadFile(string url, string path)
        {
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.Method = "POST";
            string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
            request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
            byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");

            int pos = path.LastIndexOf("\\");
            string fileName = path.Substring(pos + );

            //请求头部信息
            StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());

            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            byte[] bArr = new byte[fs.Length];
            fs.Read(bArr, , bArr.Length);
            fs.Close();

            Stream postStream = request.GetRequestStream();
            postStream.Write(itemBoundaryBytes, , itemBoundaryBytes.Length);
            postStream.Write(postHeaderBytes, , postHeaderBytes.Length);
            postStream.Write(bArr, , bArr.Length);
            postStream.Write(endBoundaryBytes, , endBoundaryBytes.Length);
            postStream.Close();

            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream instream = response.GetResponseStream();
            StreamReader sr = new StreamReader(instream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }
        /// <summary>
        /// 删除图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void LinkBtnDeleteImg_Click(object sender, EventArgs e)
        {
            string filename = Session["fileNameimg"].ToString();

            if (!string.IsNullOrEmpty(filename))//确保picPath有值并且不为空。
            {

                string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg 

                if (File.Exists(serverpath))
                {
                    try
                    {
                        File.Delete(serverpath);
                        this.ImgTuWen.ImageUrl = "weixinimg/fengmiandefault.jpg";
                        this.ImgTuWen2.Visible = false;
                        this.ImgTuWen2.ImageUrl = "";
                        Session["fileNameimg"] = null;
                        this.LinkBtnDeleteImg.Visible = false;
                    }
                    catch(Exception ex)
                    {
                        //错误处理：
                        Response.Write(ex.Message.ToString());
                    }
                }
            }
        }

新建单图文预览代码如下：

  /// <summary>
        /// 预览图文消息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void LinkBtnSendPreview_Click(object sender, EventArgs e)
        {
            Session["media_id"] = null;

            //非空验证
            if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题！');", true);
                this.txttuwen_title.Focus();
                return;
            }
            if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);
                this.ImgTuWen2.Focus();
                return;
            }
            if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);
                this.tbContent.Focus();
                return;
            }

            //对各项进行赋值
            WeiXinServer wxs = new WeiXinServer();

            ///从缓存读取accesstoken
            string Access_token = Cache["Access_token"] as string;

            if (Access_token == null)
            {
                //如果为空，重新获取
                Access_token = wxs.GetAccessToken();

                //设置缓存的数据7000秒后过期
                Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
            }

            string Access_tokento = Access_token.Substring(, Access_token.Length - );

            //POST数据例子：  POST数据例子：
            //{
            //    "articles": [{
            //    "title": TITLE,
            //    "thumb_media_id": THUMB_MEDIA_ID,
            //    "author": AUTHOR,
            //    "digest": DIGEST,
            //    "show_cover_pic": SHOW_COVER_PIC(0 / 1),
            //    "content": CONTENT,
            //    "content_source_url": CONTENT_SOURCE_URL
            //     },
            //     //若新增的是多图文素材，则此处应还有几段articles结构
            //    ]
            //}

            string isshow_cover_pic = "";
            if (this.CheckFengMianShow.Checked)
            {
                isshow_cover_pic = "";
            }
            else
            {
                isshow_cover_pic = "";
            }

            string description = NoHTML(this.tbContent.InnerText.ToString());

            string postData = "{\"articles\":[{\"title\":\"" + this.txttuwen_title.Value.ToString() +
                "\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() +
                "\",\"author\":\"" + this.txttuwen_author.Value.ToString() +
                "\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() +
                    "\",\"show_cover_pic\":\"" + isshow_cover_pic +
                    "\",\"content\":\"" + description +
                    "\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() +
                    "\"}]}";

            string posturl = string.Format("https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);

            string jsonres = PostUrl(posturl, postData);

            if (jsonres.Contains("media_id"))
            {
                //使用前需要引用Newtonsoft.json.dll文件
                JObject jsonObj = JObject.Parse(jsonres);

                if (this.txttoUserName.Value.ToString().Trim().Equals("请输入用户微信号"))
                {
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入接收消息的用户微信号！');", true);
                    return;
                }

                string posturls = "https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=" + Access_tokento;

                //预览图文消息的json数据{
                //   "touser":"OPENID", 可改为对微信号预览，例如towxname：zhangsan
                //   "mpnews":{
                //            "media_id":"123dsdajkasd231jhksad"
                //             },
                //   "msgtype":"mpnews"
                //}
                string postDatas = "{\"towxname\":\"" + this.txttoUserName.Value.ToString() +
                                    "\",\"mpnews\":{\"media_id\":\"" + jsonObj["media_id"].ToString() +
                                    "\"},\"msgtype\":\"mpnews\"}";

                string tuwenres = wxs.GetPage(posturls, postDatas);

                //使用前需药引用Newtonsoft.json.dll文件
                JObject jsonObjss = JObject.Parse(tuwenres);

                if (jsonObjss["errcode"].ToString().Equals(""))
                {
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览成功！！');", true);
                    return;
                }
                else
                {
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览失败！！');", true);
                    return;
                }
            }
        }
        public static string NoHTML(string Htmlstring)
        {

            //删除脚本
            Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);

            //替换标签
            Htmlstring = Htmlstring.Replace("\r\n", " ");
            Htmlstring = Htmlstring.Replace("\"", "'");
            Htmlstring = Htmlstring.Replace("&nbsp;", " ");
            return Htmlstring;

        }

单击确定按钮代码如下：

  /// <summary>
        /// 确认选择
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void LinkBtnSubSave_Click(object sender, EventArgs e)
        {
            Session["media_id"] = null;
            //非空验证
            if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题！');", true);
                return;
            }
            if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);
                return;
            }
            if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
            {
                ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);
                return;
            }

            //对各项进行赋值
            WeiXinServer wxs = new WeiXinServer();

            ///从缓存读取accesstoken
            string Access_token = Cache["Access_token"] as string;

            if (Access_token == null)
            {
                //如果为空，重新获取
                Access_token = wxs.GetAccessToken();

                //设置缓存的数据7000秒后过期
                Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
            }

            string Access_tokento = Access_token.Substring(, Access_token.Length - );

            //POST数据例子：  POST数据例子：
            //{
            //    "articles": [{
            //    "title": TITLE,
            //    "thumb_media_id": THUMB_MEDIA_ID,
            //    "author": AUTHOR,
            //    "digest": DIGEST,
            //    "show_cover_pic": SHOW_COVER_PIC(0 / 1),
            //    "content": CONTENT,
            //    "content_source_url": CONTENT_SOURCE_URL
            //     },
            //     //若新增的是多图文素材，则此处应还有几段articles结构
            //    ]
            //}

            string isshow_cover_pic = "";
            if (this.CheckFengMianShow.Checked)
            {
                isshow_cover_pic = "";
            }
            else
            {
                isshow_cover_pic = "";
            }

            string description = NoHTML(this.tbContent.InnerText.ToString());

            string postData = "{\"articles\":[{\"title\":\"" + this.txttuwen_title.Value.ToString() +
                "\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() +
                "\",\"author\":\"" + this.txttuwen_author.Value.ToString() +
                "\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() +
                    "\",\"show_cover_pic\":\"" + isshow_cover_pic +
                    "\",\"content\":\"" + description +
                    "\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() +
                    "\"}]}";

            string posturl = string.Format("https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);

            string jsonres = PostUrl(posturl, postData);

            if (jsonres.Contains("media_id"))
            {
                //使用前需要引用Newtonsoft.json.dll文件
                JObject jsonObj = JObject.Parse(jsonres);

                WxMpNewsInfo wmninfo = new WxMpNewsInfo();
                wmninfo.title = this.txttuwen_title.Value.ToString();
                wmninfo.contents = description.ToString();
                wmninfo.ImageUrl = this.ImgTuWen.ImageUrl.ToString();
                Session["wmninfo"] = wmninfo;
                Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());
            }
        }
        /// <summary>
        /// 请求Url，发送数据
        /// </summary>
        public static string PostUrl(string url, string postData)
        {
            byte[] data = Encoding.UTF8.GetBytes(postData);

            // 设置参数
            HttpWebRequest 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;
            Stream outstream = request.GetRequestStream();
            outstream.Write(data, , data.Length);
            outstream.Close();

            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream instream = response.GetResponseStream();
            StreamReader sr = new StreamReader(instream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }

Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());

这句代码就是将上传图文后得到的media_Id参数传送到群发界面，群发界面接收代码如下：

 protected void Page_Load(object sender, EventArgs e)
        {
            if(!Page.IsPostBack)
            {
                BindNewsSucaiList();//绑定素材列表
                BindGroupList();//绑定分组列表
                BindMassCount();//绑定本月已群发条数
                this.DataBind();
                if (Request.QueryString["media_id"] != null)
                {
                    this.RadioBtnList.SelectedValue = "";
                    this.showExpress.Visible = false;
                    this.txtwenben.Visible = false;
                    this.tuwen.Visible = true;
                    this.tuwenxuan.Visible = false;
                    this.tuwenjian.Visible = false;
                    this.lbtuwenmedai_id.Visible = true;
                    this.lbtuwenmedai_id.Text = Request.QueryString["media_id"].ToString();
                    this.LinkBtndeletetuwen.Visible = true;
                    this.Imageyixuan.Visible = true;
                }
            }
        }

最终界面如下：

我这里只接收了一个media_id值，相对于做的简单，直接将值赋值给了一个label用于显示，也可以做成像官网那样，确定选择后，按照图文样式显示.

最后一步：群发按钮代码：其实上一章已经将代码贴出去了，这一章，我就单独贴一遍吧。

  /// <summary>
        /// 群发
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void LinkBtnSubSend_Click(object sender, EventArgs e)
        {
            //根据单选按钮判断类型，//如果选择的是图文消息
            if (this.RadioBtnList.SelectedValue.ToString().Equals(""))
            {
                if (String.IsNullOrWhiteSpace(this.lbtuwenmedai_id.Text.ToString().Trim()))
                {
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请选择或新建图文素材再进行群发！');", true);
                    return;
                }

                WxMassService wms = new WxMassService();

                List<WxMassInfo> wxmaslist = wms.GetMonthMassCount();

                if (wxmaslist.Count >= )
                {
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('本月可群发消息数量已达上限！');", true);
                    return;
                }
                else
                {

                    //如何群发类型为全部用户，根据openID列表群发给全部用户，订阅号不可用，服务号认证后可用
                    if (this.DDLMassType.SelectedValue.ToString().Equals(""))
                    {
                        StringBuilder sbs = new StringBuilder();
                        sbs.Append(GetAllUserOpenIDList());

                        WeiXinServer wxs = new WeiXinServer();

                        ///从缓存读取accesstoken
                        string Access_token = Cache["Access_token"] as string;

                        if (Access_token == null)
                        {
                            //如果为空，重新获取
                            Access_token = wxs.GetAccessToken();

                            //设置缓存的数据7000秒后过期
                            Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
                        }

                        string Access_tokento = Access_token.Substring(, Access_token.Length - );

                        string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;

                        ///群发POST数据示例如下：
                        //  {
                        //   "touser":[
                        //    "OPENID1",
                        //    "OPENID2"
                        //   ],
                        //   "mpnews":{
                        //      "media_id":"123dsdajkasd231jhksad"
                        //   },
                        //    "msgtype":"mpnews"
                        //}

                        string postData = "{\"touser\":[" + sbs.ToString() +
                            "],\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +
                            "\"},\"msgtype\":\"mpnews\"}";

                        string tuwenres = wxs.GetPage(posturl, postData);

                        //使用前需药引用Newtonsoft.json.dll文件
                        JObject jsonObj = JObject.Parse(tuwenres);

                        if (jsonObj["errcode"].ToString().Equals(""))
                        {
                            Session["media_id"] = null;
                            WxMassInfo wmi = new WxMassInfo();
                            if (Session["wmninfo"] != null)
                            {
                                WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;

                                wmi.title = wmninfo.title.ToString();
                                wmi.contents = wmninfo.contents.ToString();
                                wmi.ImageUrl = wmninfo.ImageUrl.ToString();

                                wmi.type = "图文";

                                if (this.DDLMassType.SelectedValue.ToString().Equals(""))
                                {
                                    wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
                                }
                                else
                                {
                                    wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
                                }

                                wmi.massStatus = "成功";//群发成功之后返回的状态码
                                wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID

                                wmi.massDate = System.DateTime.Now.ToString();

                                int num = wms.AddWxMassInfo(wmi);

                                if (num > )
                                {
                                    Session["wmninfo"] = null;
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);
                                    return;
                                }
                                else
                                {
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
                                    return;
                                }
                            }
                            else
                            {
                                wmi.title = "";
                                wmi.contents = "";
                                wmi.ImageUrl = "";
                                wmi.type = "图文";

                                if (this.DDLMassType.SelectedValue.ToString().Equals(""))
                                {
                                    wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
                                }
                                else
                                {
                                    wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
                                }

                                wmi.massStatus = "成功";//群发成功之后返回的状态码
                                wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID

                                wmi.massDate = System.DateTime.Now.ToString();

                                int num = wms.AddWxMassInfo(wmi);

                                if (num > )
                                {
                                    Session["wmninfo"] = null;
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);
                                    return;
                                }
                                else
                                {
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
                                    return;
                                }
                            }
                        }
                        else
                        {
                            ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);
                            return;
                        }

                    }
                    else
                    {
                        //根据分组进行群发，订阅号和服务号认证后均可用

                        string group_id = this.DDLGroupList.SelectedValue.ToString();

                        WeiXinServer wxs = new WeiXinServer();

                        ///从缓存读取accesstoken
                        string Access_token = Cache["Access_token"] as string;

                        if (Access_token == null)
                        {
                            //如果为空，重新获取
                            Access_token = wxs.GetAccessToken();

                            //设置缓存的数据7000秒后过期
                            Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(), System.Web.Caching.Cache.NoSlidingExpiration);
                        }

                        string Access_tokento = Access_token.Substring(, Access_token.Length - );

                        string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;

                        ///群发POST数据示例如下：
                        //   {
                        //   "filter":{
                        //      "is_to_all":false
                        //      "group_id":"2"
                        //   },
                        //   "mpnews":{
                        //      "media_id":"123dsdajkasd231jhksad"
                        //   },
                        //    "msgtype":"mpnews"
                        //}

                        string postData = "{\"filter\":{\"is_to_all\":\"false\"\"group_id\":\""+group_id+
                            "\"},\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +
                            "\"},\"msgtype\":\"mpnews\"}";

                        string tuwenres = wxs.GetPage(posturl, postData);

                        //使用前需药引用Newtonsoft.json.dll文件
                        JObject jsonObj = JObject.Parse(tuwenres);

                        if (jsonObj["errcode"].ToString().Equals(""))
                        {
                            Session["media_id"] = null;
                            WxMassInfo wmi = new WxMassInfo();
                            if (Session["wmninfo"] != null)
                            {
                                WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;

                                wmi.title = wmninfo.title.ToString();
                                wmi.contents = wmninfo.contents.ToString();
                                wmi.ImageUrl = wmninfo.ImageUrl.ToString();

                                wmi.type = "图文";

                                if (this.DDLMassType.SelectedValue.ToString().Equals(""))
                                {
                                    wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
                                }
                                else
                                {
                                    wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
                                }

                                wmi.massStatus = "成功";//群发成功之后返回的状态码
                                wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID

                                wmi.massDate = System.DateTime.Now.ToString();

                                int num = wms.AddWxMassInfo(wmi);

                                if (num > )
                                {
                                    Session["wmninfo"] = null;
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);
                                    return;
                                }
                                else
                                {
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
                                    return;
                                }
                            }
                            else
                            {
                                wmi.title = "";
                                wmi.contents = "";
                                wmi.ImageUrl = "";
                                wmi.type = "图文";

                                if (this.DDLMassType.SelectedValue.ToString().Equals(""))
                                {
                                    wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
                                }
                                else
                                {
                                    wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
                                }

                                wmi.massStatus = "成功";//群发成功之后返回的状态码
                                wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID

                                wmi.massDate = System.DateTime.Now.ToString();

                                int num = wms.AddWxMassInfo(wmi);

                                if (num > )
                                {
                                    Session["wmninfo"] = null;
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);
                                    return;
                                }
                                else
                                {
                                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
                                    return;
                                }
                            }
                        }
                        else
                        {
                            ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);
                            return;
                        }
                    }
                }
            }
        }

为什么叫群发任务提交成功或失败，因为将信息提交给微信服务器，微信服务器还需审核，审核过程中也有可能审核不通过，不给于群发，所以我起名叫这个，嘿嘿，随便你们怎么起。。。。。

至此群发图文信息功能，已完毕，最后是群发记录，还记得上一章提到的群发成功之后要在本地保存记录吗，保存记录的原因，用于计算当月已群发几条信息，另外还有一个功能就是，群发成功之后，会得到一个消息msgid,根据这个ID可以对已经发送成功的信息进行撤销（删除）操作，关于撤销操作：微信官方规定，对群发成功的图文和视频消息，半个小时之内可以进行删除操作，其他消息一经群发成功概不支持此操作。截图如下：

该类用于存储已群发记录的实体类

 /// <summary>
    /// 微信已群发消息实体类，用于记录已群发消息的条数，信息实体
    /// </summary>
   public class WxMassInfo
    {
       public int WxMassNo { get; set; }//群发消息编号，数据库自增列

       public string title { get; set; }//图文消息的标题，若消息是文本类型，此项不显示

       public string ImageUrl { get; set; }//图片地址，若消息是文本类型，此项不显示

       public string type { get; set; }//消息的类型，文本，图文，图片，语音，视频

       public string contents { get; set; }//文本消息的内容，图文消息的正文

       public string massObject { get; set; }//群发对象

       public string massStatus { get; set; }//群发状态

       public string massMessageID{ get; set; }//群发成功后返回的消息ID

       public string massDate { get; set; }//群发日期时间

    }

撤销操作的代码，后期再贴出，下班喽。。。。。。。。。。。。。。。。。。。。。。。。