push notifications in Windows

Luis Rodriguez 0

Hi, I'm developing an application in MAUI, and I'm working with push notifications in Windows, what is the normal behavior of push notifications when the application is closed (not minimized)? When the app is open the notifications arrive and everything is fine, but when it is closed, do they have to arrive and be shown or they only arrive when the application is running?

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,451 Reputation points Microsoft Vendor

2023-12-06T08:09:07.9666667+00:00

MAUI app that targets for Windows platform uses WinUI3, and you could refer to Quickstart Push notifications in the Windows App SDK - Windows apps | Microsoft Learn

As I understand, you have added notifications features for your app, but it cannot be arrived when the app is closed, right?

Usually, the notifications should be arrived. I ‘m not sure how you configured the project and how to push the notifications, is it just a local toast notification? Could you describe more about what you did?

Luis Rodriguez 0

Yes, that's right.

The application is configured with Azure Services, specifically Notification Hubs.

When I receive the notification information, I create ToastContent and show with ToastNotificationManagerCompat.CreateToastNotifier().Show(n);

Windows: Package.appxmanifest

 <Applications>
<Extensions>
...
<!--Specify which CLSID to activate when app notification clicked-->
        <desktop:Extension Category="windows.toastNotificationActivation">
          <desktop:ToastNotificationActivation ToastActivatorCLSID="IdToastActivator" />
        </desktop:Extension>
        
<!--Register COM CLSID LocalServer32 registry key-->
<com:Extension Category="windows.comServer">
<com:ComServer>
            <com:ExeServer Executable="ProjectExample.exe" Arguments="-ToastActivated" DisplayName="Toast activator">
              <com:Class Id="IdToastActivator" DisplayName="Toast activator"/>
            </com:ExeServer>
          </com:ComServer>
        </com:Extension>
 ... 
...
</Extensions>
</Applications>

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,451 Reputation points Microsoft Vendor

2023-12-07T05:34:00.7066667+00:00

From the doc above, you could try AppNotificationManager instead of ToastNotificationManager. And you said you are using Azure Notification Hubs, you could refer to .NET docs for ANH: Azure Notification Hubs SDK for .NET - Azure for .NET Developers | Microsoft Learn, and there is a code sample showing how to send WNS message.

Also, I will add Azure Notification Hubs tag for this thread so that Azure team can focus on it.

1 answer

brtrach-MSFT 15,256 Reputation points Microsoft Employee

2024-01-26T04:05:14.8733333+00:00

@Luis Rodriguez Hello! When your application is closed, push notifications should still arrive and be shown as toast notifications. However, keep in mind that the behavior may vary depending on the platform and the specific implementation of push notifications in your application. In the case of Windows, as you mentioned, you can use the ToastNotificationManager to create and show toast notifications. The code you provided seems to be registering a COM server to handle the activation of the toast notification when it is clicked. To ensure that your application can receive push notifications even when it is closed, you need to make sure that you have properly registered your application with the Notification Hubs service and that you are correctly handling the push notifications in your code. If you have any specific questions or issues with your implementation, feel free to provide more details and I'll do my best to help you out!
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