Send push notification to all registered devices with Azure Notification Hub in .NET

Question

I'm working with Azure Notification Hub, and I want to send a push notification message to all registered device in .NET backend. But I'm not sure this way will send to all devices because I don't have the way to check the number of devices received push message. So, how to, I can send a push message to all devices or can make sure this way is correct?

public static async Task<bool> SendBroadcast(string msg)
    {
        try
        {
            var notificationHubClient = NotificationHubClient.CreateClientFromConnectionString(ConfigurationManager.AppSettings["ServiceBusPushNotificationConnectionString"], ConfigurationManager.AppSettings["ServiceBusPushNotificationName"]);
            Dictionary<string, string> param = new Dictionary<string, string>();
            param.Add("message", msg);
            param.Add("alert", msg);
            var template = new TemplateNotification(param);
            var result = await notificationHubClient.SendNotificationAsync(template);
            Console.WriteLine(JsonConvert.SerializeObject(result));
            return true;
        }
        catch (Exception exception)
        {
            Console.WriteLine(exception.Message);
            return false;
        }
    }

Small note, result is of type NotificationOutcome which has prop Failure and prop Success both of type long. So you return true, while it can be false (fail)? — JP Hellemons

Sateesh Sateesh · Accepted Answer · 2016-09-20T17:21:31

If you don't specify any tag expression, that means it's broadcast. All devices will receive the notification. You can track how many devices are received through using Per Message Telemetry. Please see below links for same.

https://msdn.microsoft.com/en-us/library/azure/mt608135.aspx https://azure.microsoft.com/en-us/blog/push-notification-hub-telemetry-expiry-update/

Send push notification to all registered devices with Azure Notification Hub in .NET

2 Answers