什么是依赖属性？它有什么用？
可能性：
什么是依赖属性？
什么是依赖属性？它与普通财产有何不同？依赖属性的目的是什么？以及为什么使用它、何时使用它？
Possiblity:
What is a dependency property?
What is a dependency property? How does it differ from a normal property? What is the purpose of dependency properties? And why it is used, when it is used?
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依赖属性：由 依赖属性。
它具有以下功能：
可以在样式中设置属性。
可以通过数据绑定来设置属性。
可以使用动态资源引用来设置该属性。
该属性可以自动从元素树中的父元素继承其值。
该属性可以设置动画。
该属性可以报告该属性的先前值何时发生更改，并且可以强制该属性值。
该属性向 WPF 报告信息，例如更改属性值是否需要布局系统重新组合元素的视觉效果。
该属性在 Visual Studio 的 WPF 设计器中获得支持。例如，可以在“属性”窗口中编辑该属性。
（内容取自 MSDN）
Dependency property: A property that is backed by a DependencyProperty.
It has Following capabilities:
The property can be set in a style.
The property can be set through data binding.
The property can be set with a dynamic resource reference.
The property can inherit its value automatically from a parent element in the element tree.
The property can be animated.
The property can report when the previous value of the property has been changed and the property value can be coerced.
The property reports information to WPF, such as whether changing a property value should require the layout system to recompose the visuals for an element.
The property receives support in the WPF Designer for Visual Studio. For example, the property can be edited in the Properties window.
(Content taken from MSDN)
依赖属性将其值存储在类之外，因此属性可以分配给一个对象，而不必更改该对象的类。它们还支持 WPF 中常见的情况，其中对象可能具有非常多的属性，但只有少数属性具有非默认值。依赖属性可以有默认值，因此这可以减少内存使用量。还有更多内容，请阅读 MSDN 上的文章：依赖属性概述。
Dependency properties store their values outside the class, so properties can be assigned to an object without having to change the object's class. They also support a situation common in WPF where an object may have very many properties, but only a few have non-default values. Dependency properties can have default values, so this reduces memory usage. There is lots more, read the article: Dependency Properties Overview on MSDN.
我认为 MSDN 文章 可以为您提供更多信息。
据我所知，依赖属性依赖于其他值。
I think the MSDN article can give you more information.
From what I read is that a Dependency Property relies on other values.
如果您正在谈论具有 Dependency 属性（如
Microsoft.Practices.Unity中定义）然后，Unity 框架将其用于依赖注入 (DI)。基本上，属性值是由 DI 框架在运行时设置的，而不是直接在代码中设置。
但是，还有另一个 Dependency 属性定义在
System.Runtime.CompilerServices。请您更新您的问题，您指的是哪一个。If you are talking about a property with a Dependency attribute (as defined in
Microsoft.Practices.Unity)Then this is used for dependency injection (DI) by the Unity framework. Basically, the property value is set at runtime by the DI framework, rather than being set directly in your code.
However, there is another Dependency attribute defined in
System.Runtime.CompilerServices. Please could you update your question with which one you mean.