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Can anyone explain how is dependency property implemented? Is it just a static dictionary that is declared in base class with a reference of given instance as a key?I can't find any resources about this in internet...
Thanks a lot
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A dependency property can reference a value through data binding. Data binding works through a specific markup extension syntax in XAML, or the Binding object in code. With data binding, determination of the final property value is deferred until run time, at which time the value is obtained from a data source.
A DependencyProperty maintains a static reference of all the DependencyProperty you register in WPF object hierarchy. It maintains a HashTable named PropertyFromName which it uses internally to get the DependencyProperty object. So in other word, each dependencyProperty object is registered in a global HashTable.
Arguably the biggest feature of a dependency property is its built-in ability to provide change notification. The motivation for adding such intelligence to properties is to enable rich functionality directly from declarative markup.
I see two questions:
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...a few years later.
and there is already a source code browser for .NET. You can study how it is implemented here: DependencyProperty.cs
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