.AsObservable() .Subscribe always returns the first post instead of changed,updated post.

.Child("Posts")
.AsObservable()
.Subscribe(d => Console.WriteLine(d.Key));

Expecting key of updated post but instead receive the first post as listed on Realtime Database. Anyone else having this behaviour?

[TennisDrum]

I have several subscriptions working in an app I’m working on. An example of one is shown below. One thing I noticed that’s different with yours is in the .AsObservable() line, there’s no object class designated (see my example below - “Event” is an object Class). I’m not an expert here - just know what I’ve done to get this to work. Also, in my example “returnedEvents” is an IDisposable. _returnedEvents is an ObservableCollection.

returnedEvents = App.firebase
            .Child("Events")
            .AsObservable<Event>()
            .Subscribe(eventReceived =>
            {

                // check to see what type of FirebaseEvent was detected by the subscription
                if (eventReceived.EventType == Firebase.Database.Streaming.FirebaseEventType.Delete)
                    // record deleted - remove from ObservableCollection
                    _returnedEvents.Remove(eventReceived.Object);

                // record was added or updated
                if (eventReceived.EventType == Firebase.Database.Streaming.FirebaseEventType.InsertOrUpdate)
                {
                    // see if the inserted/updated object is already in our ObservableCollection
                    var found = _returnedEvents.FirstOrDefault(i => i.Key == eventReceived.Key);

                    if (found == null)
                    {
                        //  is NOT in the observableCollection - add it
                        _returnedEvents.Add(eventReceived.Object);
                    }

                    // nothing to do if eventReceived is already in our ObservableCollection - because
                    // of INotifyPropertyChanged, the update will happen automatically
                }

            });

[stale[bot]]

Closing the issue due to inactivity. Feel free to re-open