Google Chrome Push Notification in ASP.Net

Last Reply on Dec 26, 2017 04:46 AM By dharmendr

Posted on Dec 21, 2017 03:34 AM

I sucessfully send notification to google chrome. My service-worker.js is below.



'use strict';

self.addEventListener('push', function(event) {
  console.log('Received a push message', event);

  var title = 'Pushup Notification';
  var body = 'Test';
  var icon = 'images/icon.png';
  var badge = 'images/badge.png'
  var tag = 'simple-push-demo-notification-tag';

    self.registration.showNotification(title, {
      body: body,
      icon: icon,
      badge: badge,
      tag: tag

self.addEventListener('notificationclick', function(event) {
  console.log('On notification click: ', event.notification.tag);
  // Android doesn’t close the notification when you click on it
  // See:

  // This looks to see if the current is already open and
  // focuses if it is
    type: 'window'
  }).then(function(clientList) {
    for (var i = 0; i < clientList.length; i++) {
      var client = clientList[i];
      if (client.url === '/' && 'focus' in client) {
        return client.focus();
    if (clients.openWindow) {
      return clients.openWindow('/');

Below is the sending code to Google Chrome.


Public Function SendNotification(ByVal deviceId As String, ByVal message As String) As String

        Dim SERVER_API_KEY As String = "API KEY"
        Dim SENDER_ID = "Sender ID"
        Dim value = message
        Dim tRequest As WebRequest
        tRequest = WebRequest.Create("")
        tRequest.Method = "post"
        tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8"
        tRequest.Headers.Add(String.Format("Authorization: key={0}", SERVER_API_KEY))

        tRequest.Headers.Add(String.Format("Sender: id={0}", SENDER_ID))

        Dim postData As String = (Convert.ToString((Convert.ToString("collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=") & value) + "&data.time=" + System.DateTime.Now.ToString() + "&registration_id=") & deviceId) + ""
        Dim byteArray As [Byte]() = Encoding.UTF8.GetBytes(postData)
        tRequest.ContentLength = byteArray.Length

        Dim dataStream As Stream = tRequest.GetRequestStream()
        dataStream.Write(byteArray, 0, byteArray.Length)

        Dim tResponse As WebResponse = tRequest.GetResponse()

        dataStream = tResponse.GetResponseStream()

        Dim tReader As New StreamReader(dataStream)

        Dim sResponseFromServer As [String] = tReader.ReadToEnd()

        Return sResponseFromServer

    End Function

What my question is When i'm sending with above code the push up notification showing whatever in the Hard coded title and body which is in service-worker.js. How to show my message which is in above .net code.

Thanks Basit.

You are viewing reply posted by: dharmendr on Dec 26, 2017 04:46 AM.
Posted on Dec 26, 2017 04:46 AM

Hi basit0079,

What is the problem with this code. Are you getting any error?