Why are Azure Notification Hub tags not saving?

Question

I am trying to send a message to notification hub, but my tags are not saving.

I checked service hub with service hub explorer, and tags are empty:

Registration of device:

var hs = new HashSet<string>();
        hs.Add(tag);
        hs.Add(sys.ToString());
        switch (sys)
        {
            case SystemVendorEnum.Android:
                await Hub.CreateGcmNativeRegistrationAsync(pnsHandle, hs);
                break;
            case SystemVendorEnum.Ios:
                await Hub.CreateAppleNativeRegistrationAsync(pnsHandle, hs);
                break;
        }

Test method invocation that sends message to hub:

// param1: json payload, param2: tag
await Hub.SendGcmNativeNotificationAsync("{ \"data\": { \"methodId\":\"1\" }}", "ae65d2d5-103e-4023-a784-c5c8e2684db0");

Is there anything I am missing? I don't have tags in notification hub:

Is that the case?

Answer 1

I know, it's confusing, but there're two completely separate kinds of tags that have have no relationship to each other whatsoever:

1. Tags that are within the context of Azure Notification Hub service. Those apply to device registrations. So, it's Notification Hubs service -specific and describes devices. See Routing and Tag Expressions for more details.
2. Tags that as a concept of Azure Resource Manager (ARM). Those apply to any resource within Azure. So it's platform -specific and are used to describe any resource/service you have within Azure. See Using tags to organize your Azure resources for more details.

So when you call hs.Add(tag) , the associated tags apply to the device registration (ie 'tags of the first kind') and should show up in the Service Bus explorer:

And if you go to Azure portal and navigate to any resource (or as you did, to your hub), you'll see ARM tags there (ie 'tags of the second kind'):