public void TestCatch()
{
var integer = new BehaviorSubject <int>(1);
var intObservable = integer.Catch((Exception e) => Observable.Return <int>(-1));
var sub = intObservable.Subscribe(next => Debug.Print("next " + next),
(Exception e) => Debug.Print("error" + e),
() => Debug.Print("complete")
);
integer.OnNext(5);
integer.OnNext(4);
integer.OnCompleted();
}