微信公众平台开发之发送文本消息.Net代码解析

.Net实现微信公共服务平台开发中的发送文本消息功能，具体内容如下

首先建立一个微信消息类。 

 class wxmessage 
 { 
 public string FromUserName { get; set; } 
 public string ToUserName { get; set; } 
 public string MsgType { get; set; } 
 public string EventName { get; set; } 
 public string Content { get; set; }
 public string EventKey { get; set; } 
 } 

 后台代码如下： 

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

 if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "subscribe")
 {//刚关注时的时间，用于欢迎词
 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 (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!");
 }
 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;
 }

 
 return wx;
 }

/// 
 /// 发送文字消息 
 /// 
 /// 获取的收发者信息 
 /// 内容 
 /// 
 private string sendTextMessage(wxmessage wx, string content)
 {
 string res = string.Format(@" ",
 wx.FromUserName, wx.ToUserName, DateTime.Now, content);
 return res;
 }