#29 – DependencyObject

DependencyObject is the base class for classes that support dependency properties.

A dependency property in WPF is similar to a standard CLR property, but more powerful.  Dependency properties:

• Obtain their values from one of a number of different sources
• Support inheritance of property values
• Support notification, when a property value changes

If a class derives from DependencyObject, that class can then register its own dependency properties and call methods to get/set the values of its dependency properties.