无UI如何使用WhenAny使用两个属性？ [英] Reactive UI how to use WhenAny using two properties?

问题描述

我想使用WhenAny（无UI）的第一次。

I am trying to use WhenAny (Reactive UI) for the first time.

在一个标识符==XYZ和IsMax场得到改变，要在本地值设置为true的订阅，

When a Identifier =="xyz" and a IsMax field get changes, want to set a local value to true in the subscribe,

   this.WhenAny(x => x.IsMax, x => x.Value)
       .Subscribe(x => 
            {
                if (Identifier == "xyz")
                {  
                   isOk = true; 
                }
            });

但有合并标识符状况以及任何其他方式？

but is there any other way to merge Identifier condition as well?

推荐答案

我不熟悉ReactiveUI，但如果使用相同的IObservable的反应扩展，那么你可以这样做：

I'm not familiar with ReactiveUI, but if it uses the same IObservable as Reactive Extensions, then you could do this:

   this.WhenAny(x => x.IsMax, x => x.Value)
       .Where(_ => Identifier == "xyz")
       .Subscribe(_ => 
           {
               isOk = true;
           });

这是你想要的？

Is this what you wanted?

PS：我应该在注释中问这个，但我没有足够的声誉呢。

PS.: I should have asked this in a comment, but I haven't got enough reputation yet.

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