How is WPF's DependencyObject implemented?

c# wpf dependency-properties dependencyobject
Tony the Pony picture Tony the Pony · May 23, 2011 · Viewed 16.8k times · Source

Are there any articles that describe how the DependencyObject class in WPF works "under the hood"?

Specifically, I'm curious about how dependency properties are stored and accessed efficiently.

Answer

Hasanain picture Hasanain · May 23, 2011

As we know, a dependency property can be defined only on types that subclass DependencyObject. This base class defines a key value dictionary, that contains the local values of dependency properties.

When a dependency property is accessed, it's value is dynamically resolved (via the GetValue(dependencyproperty) in the .Net wrapper). For greater detail, check here: http://wpftutorial.net/DependencyProperties.html

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