Get next event in sequence every second with reactive-extensions

Question

I have the below types ...

public class NewsFeed
{
    public event EventHandler NewItem;

    .....

}

public class NewsItemEventA         


        

Answer 1

You could zip your sequence with another which produces values at regular intervals:

Observable nis = _source
    .Zip(Observable.Timer(Timespan.FromSeconds(5), TimeSpan.FromSeconds(5)), (e, _) => e)
    .Select(eventArgs => eventArgs.Item);