wp推送消息笔记

 // 构造函数  
        public MainPage()  
        {  
            HttpNotificationChannel myChannel = null;  
            // 推送信道的名字，随便取一个就行了  
            string ChannelName = "ToastChannel";  
            InitializeComponent();  
            // Find静态方法可以根据名字查找信道  
            myChannel = HttpNotificationChannel.Find(ChannelName);  
            // 因为系统有时候会删除通道，所以要判断是否存在，如果找不到，就要创建一个了  
            if (myChannel == null)  
            {  
                myChannel = new HttpNotificationChannel(ChannelName);  
                // 注册事件  
                myChannel.ChannelUriUpdated += new EventHandler<NotificationChannelUriEventArgs>(myChannel_ChannelUriUpdated);  
                myChannel.ErrorOccurred += new EventHandler<NotificationChannelErrorEventArgs>(myChannel_ErrorOccurred);  
                myChannel.ShellToastNotificationReceived += new EventHandler<NotificationEventArgs>(myChannel_ShellToastNotificationReceived);  
                // 打开信道  
                myChannel.Open();  
                // 绑定Toast通知，这样在程序不在前台时才会显示  
                // 屏幕上方的通知提示条  
                myChannel.BindToShellToast();  
            }  
            else  
            {  
                // 如果存在，还要注册一次事件，因为在程序被扔到后台后可能会删除事件绑定  
                myChannel.ChannelUriUpdated+=new EventHandler<NotificationChannelUriEventArgs>(myChannel_ChannelUriUpdated);  
                myChannel.ErrorOccurred+=new EventHandler<NotificationChannelErrorEventArgs>(myChannel_ErrorOccurred);  
                myChannel.ShellToastNotificationReceived+=new EventHandler<NotificationEventArgs>(myChannel_ShellToastNotificationReceived);  
                  
                // 在“输出”窗输出URL，因为我们只是测试，这样一来方便一点  
                System.Diagnostics.Debug.WriteLine("通道URI为：{0}", myChannel.ChannelUri.ToString());  
            }  
        }  
  
        void myChannel_ShellToastNotificationReceived(object sender, NotificationEventArgs e)  
        {  
//这里主要是当用户正在使用你的应用，而你刚好推送消息过来，执行此方法
            string msg = "";  
            foreach (string key in e.Collection.Keys)  
            {  
                msg += key + " : " + e.Collection[key] + "\r\n";  
            }  
            Dispatcher.BeginInvoke(() =>  
                {  
                    this.txtInfo.Text = msg;  
                });  
        }  
  
        void myChannel_ErrorOccurred(object sender, NotificationChannelErrorEventArgs e)  
        {  
            Dispatcher.BeginInvoke(() => MessageBox.Show(e.Message));  //错误产生的时候，执行这里面内容，实际情况，可以根据 自己需要处理
        }  
  
        void myChannel_ChannelUriUpdated(object sender, NotificationChannelUriEventArgs e)  
        {  
            // 当URL发生改变后，还要输出一次  
            // 保证我们得到的是最新版本的URI  
            Dispatcher.BeginInvoke(() =>  
            {  
                System.Diagnostics.Debug.WriteLine("通道URI：{0}", e.ChannelUri.ToString());  
            });  
        }  

    private void SendMsg()
        {
            //txtUrl.Tex该参数是手机的uri，要推送消息，首先要确定你要推送用户手机的uri
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(txtUrl.Text);
            myRequest.ContentType = "text/xml";
            myRequest.Headers.Add("X-WindowsPhone-Target", "toast");
            /* 
             *   X-NotificationClass 处理间隔 
             *   2 - 立即发送 
             *   12 - 450秒内发送 
             *   22 - 900秒内发送 
             */
            myRequest.Headers.Add("X-NotificationClass", "2");

            // 要发送的内容  txtValue1.Text：标题，txtValue2.Text：推送内容，txtParam.Text：当用户点击消息的时候，导航的页面，如mainpage.xaml
            string toastMessage = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
            "<wp:Notification xmlns:wp=\"WPNotification\">" +
                "<wp:Toast>" +
                    "<wp:Text1>" + txtValue1.Text + "</wp:Text1>" +
                    "<wp:Text2>" + txtValue2.Text + "</wp:Text2>" +
                    "<wp:Param>" + txtParam.Text + "</wp:Param>" +
                "</wp:Toast>" +
            "</wp:Notification>";

            byte[] buffer = Encoding.UTF8.GetBytes(toastMessage);//注意此处官方是Encoding.default.GetBytes(toastMessage)，我在使用的过程中，老是报错，下面会说原因
          
            myRequest.ContentLength = buffer.Length;
            myRequest.Method = "POST";

            using (Stream stream = myRequest.GetRequestStream())
            {
                stream.Write(buffer, 0, buffer.Length);
            }

            // 发送消息和获取回应
            HttpWebResponse response = (HttpWebResponse)myRequest.GetResponse();
            string notificationStatus = response.Headers["X-NotificationStatus"];
            string notificationChannelStatus = response.Headers["X-SubscriptionStatus"];
            string deviceConnectionStatus = response.Headers["X-DeviceConnectionStatus"];

           //判断是否成功推送到微软推送服务中心
            // TextBoxResponse.Text = notificationStatus + " | " + deviceConnectionStatus + " | " + notificationChannelStatus;
            if (notificationStatus == "Received" && deviceConnectionStatus == "Connected" && notificationChannelStatus == "Active")
            {
                success++;
            }
        }