question

Hello,​

Welcome to our Microsoft Q&A platform!

In UWP, Toast Notification is sent via ToastNotifier, which will inevitably leave a record in the action center.

But you can try to remove history after notification:

 private async void SendNotificationWithoutHistory(ToastNotification toast)
 {
     toast.Tag = "testTag";
     var notifier = ToastNotificationManager.CreateToastNotifier();
     notifier.Show(toast);
     await Task.Delay(3000);
     ToastNotificationManager.History.Remove("testTag");
 }

In this code, we first display a notification and then remove it from the action center after 3 seconds.

But currently, there is no API that can only show notifications without keeping records.

Thanks

You can try InAppNotification from Windows Community Toolkit (https://github.com/windows-toolkit/WindowsCommunityToolkit). It provide notification within app, easier to call

 // Show notification with simple text (and a duration of 2 seconds)
 int duration = 2000;
 ExampleInAppNotification.Show("Some text.", duration);