反应性扩展（UI）增加事件调用

Question

我有以下代码。

this.ObservableForProperty(x => x.SelectedDay) 
    .Throttle(TimeSpan.FromMilliseconds(3600)) 
    .Where(x => SelectedDay != null) 
    .ObserveOn(CoreWindow.GetForCurrentThread().Dispatcher) 
    .Subscribe(x => SomeRandomMethod()); 

油门工作的很好，它不会调用SomeRandomMethod，直到x.SelectedDay停止更改。然而，它每次改变时都会调用它。

So i do this: 
Change, 
Change, 
Wait 
//SomeRandomMethod called 2 times at end of throttle 
Change 
Wait 
//SomeRandomMethod called 3 times 
Change 
Change 
Change 
Wait 
//SomeRandomMethod called 6 times. 

我怎样才能得到它忽略所有以前的变化事件，只有在节流阀做了它的事情最新的时间。

So i would like this: 
Change 
Change 
Wait 
//SomeRandomMethod called once 
Change 
Wait 
//SomeRandomMethod called once 
Change 
Change 
Change 
Wait 
//SomeRandomMethod called once 

Answer 1

你在哪里调用这个方法？你只应该在构造函数中调用它，并且只调用它一次。此外，以下是上述代码的更好版本：

this.ObservableForProperty(x => x.SelectedDay) 
    .Throttle(TimeSpan.FromMilliseconds(3600), RxApp.DeferredScheduler) 
    .Where(x => SelectedDay != null) 
    .Subscribe(x => SomeRandomMethod());