WPF - 接收属性值更改通知骨架元素的性质 [英] Wpf - Receiving property value change notification for properties of a framework element

问题描述

如何挂钩到一个FrameworkElement的属性的属性值更改通知？我们在运行时加载XAML，并在可视化树的每个元素，我们需要挂钩的东西接收属性值更改通知，当过有人改变元素的属性值。

How to hook to the property value change notification for properties of a FrameworkElement? We are loading xaml at run time, and for each element in the visual tree, we need to hook up something to receive a property value change notification, when ever some one changes a property value of the element.

什么是最好的方式，如果一个人的存在？

What is the best way, if one exists?

推荐答案

如果你想被当被通知依赖项属性的变化值，你可以这样做（Tag属性的情况下）：

If you want to be notified when the value of a dependency property changed, you can do that (case of the Tag property) :

DependencyPropertyDescriptor desc = DependencyPropertyDescriptor.FromProperty(FrameworkElement.TagProperty, typeof(FrameworkElement));
desc.AddValueChanged(someObject, someEventHandler);

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