微信公众平台开发之发送图文消息.Net代码解析

protected string sendPicTextMessage(Msg _mode,string title,string description,string picurl,string url)
 {
 
 string res = string.Format(@"<xml>
 <ToUserName><![CDATA[{0}]]></ToUserName>
 <FromUserName><![CDATA[{1}]]></FromUserName>
 <CreateTime>{2}</CreateTime>
 <MsgType><![CDATA[news]]></MsgType>
 <ArticleCount>1</ArticleCount>
 <Articles>
 <item>
 <Title><![CDATA[{3}]]></Title> 
 <Description><![CDATA[{4}]]></Description>
 <PicUrl><![CDATA[{5}]]></PicUrl>
 <Url><![CDATA[{6}]]></Url>
 </item>
 </Articles>
 </xml> ",
 _mode.FromUserName, _mode.ToUserName, DateTime.Now,title, description, picurl, url);

 return res;

 }

protected void Page_Load(object sender, EventArgs e)
 {
 
 MyMenu();
 wxmessage wx = GetWxMessage();
 string res = "";

 if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "subscribe")
 {
 string content = "";
 content = "/:rose欢迎北京永杰友信科技有限公司/:rose\n直接回复“你好”";
 res = sendTextMessage(wx, content);
 }
 else if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "CLICK")
 {
 if(wx.EventKey=="Hello")
 res = sendTextMessage(wx, "你好,欢迎使用北京永杰友信科技有限公司公共微信平台!");
 if(wx.EventKey=="P1")
 res = sendTextMessage(wx, "你好,点击了产品1");
 if(wx.EventKey=="P2")
 res = sendTextMessage(wx, "你好,点击了产品2");
 }
 else
 {
 if (wx.MsgType == "text" && wx.Content == "你好")
 {
 res = sendTextMessage(wx, "你好,欢迎使用北京永杰友信科技有限公司公共微信平台!");
 }
 if (wx.MsgType == "text" && wx.Content == "图文")
 {
 res = sendPicTextMessage(wx,"这里是一个标题","这里是摘要","http://mp.weixin.qq.com/wiki/skins/common/images/weixin_wiki_logo.png","http://www.4ugood.net");
 }
 else if (wx.MsgType == "voice")
 {
 res = sendTextMessage(wx, wx.Recognition);
 }
 else
 {
 res = sendTextMessage(wx, "你好,未能识别消息!");
 }
 }

 Response.Write(res);
 }



 private wxmessage GetWxMessage()
 {
 wxmessage wx = new wxmessage();
 StreamReader str = new StreamReader(Request.InputStream, System.Text.Encoding.UTF8);
 XmlDocument xml = new XmlDocument();
 xml.Load(str);
 wx.ToUserName = xml.SelectSingleNode("xml").SelectSingleNode("ToUserName").InnerText;
 wx.FromUserName = xml.SelectSingleNode("xml").SelectSingleNode("FromUserName").InnerText;
 wx.MsgType = xml.SelectSingleNode("xml").SelectSingleNode("MsgType").InnerText;
 if (wx.MsgType.Trim() == "text")
 {
 wx.Content = xml.SelectSingleNode("xml").SelectSingleNode("Content").InnerText;
 }
 if (wx.MsgType.Trim() == "event")
 {
 wx.EventName = xml.SelectSingleNode("xml").SelectSingleNode("Event").InnerText;
 wx.EventKey = xml.SelectSingleNode("xml").SelectSingleNode("EventKey").InnerText;
 }
 if (wx.MsgType.Trim() == "voice")
 {
 wx.Recognition = xml.SelectSingleNode("xml").SelectSingleNode("Recognition").InnerText;
 }
 
 return wx;
 }