Override notification message and service

Radzen.Blazor Components
1

I would like my notifications to have a flag, which will inform whether they shoud be deleted on page navigation or not. Then I consume this information in Router component.
I tried do create a MyNotificationMessage class that inherits NotificationMessage and provides mentioned flag inside this class. But NotificationService in Notify method creates a new instance of NotificationMessage, so my MyNotificationMessage object is being destroyed. So I tried to create my own MyNotificationService inheriting NotificationService, that provides a new Notify method, comsumig MyNotificationMessage. But then againg I had to change RadzenNotificationMessage.razor to consume MyNotificationService instead of a default one. Unfortunately, I was not able to do this, because in * there are some properties I can't recognize like Message.SummaryContent or Message.DetailContent(Service).
Could you give me a hint on how can I implement this feature. I need to persist some messages on navigation and delete others.

2

Hi @Justyna,

You can try registering your service like this (to override the default one):

services.AddScoped<NotificationService, MyNotificationService>();

MyNotificationService must inherit from NotificationService.

3

I tried to do this, however, when I inject NotificationService in a razor comoponent, it still implements NotificationService itself and not MyNotificationService.

I checked all implementations of NotificationService in Program.cs:

foreach (var service in builder.Services.Where(s => s.ServiceType == typeof(NotificationService)))
{
	Console.WriteLine(service.ImplementationType);
}

It looks like the only implementation is MyNotificationService. But when I inject it like this:

[Inject]
public NotificationService NotificationService { get; set; }

methods consuming this service still see NotificationService class itself.

4

Make sure you are not registering the original NotificationService too. For example by having services.AddRadzenServices().

5

I'm sure that no other NotificationServices is being registerd. To be 100% sure I checked NotificationService implementations as I mentioned above and the only implementation is MyNotificationService.

Finally, I chose less clean way and just assigned my flag to NotificationMessage.Payload as I did't use it before.

Thank you for your help :slight_smile: