ReactiveUI 视图绑定到附加属性 [英] ReactiveUI View Bindings to attached property

问题描述

这个博客条目 描述了使用视图绑定替代 XAML 绑定.我喜欢基于约定的接线:

This Blog Entry describes using View Bindings as a replacement for XAML Bindings. I like the convention-based wire-up:

this.OneWayBind(ViewModel, x => x.FooMirror);

如果我想绑定到 TextBox 的 Text 属性:

And if I want to bind to a TextBox's Text property:

this.Bind(ViewModel, x => x.SomeText, x => x.SomeText.Text);

但是我有一个我想绑定的附加属性(为了实现 附加行为模式).如何使用视图绑定语法绑定到附加属性?

However I have an attached property which I would like to bind to (for an implementation of the attached behaviour pattern). How do I use the View Bindings syntax to bind to an attached property?

推荐答案

绑定目前对 XAML 附加属性一无所知 - 您可能必须通过执行以下操作来解决此问题:

Binding doesn't know anything about XAML attached properties at the moment - you might have to work around this by doing something like:

this.WhenAny(x => x.ViewModel.SomeCoolProperty, x => x.Value)
    .Subscribe(x => theControl.SetValue(AttachedObject.MyAttachedProperty, x);

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