Assembly: WindowsBase (in WindowsBase.dll)
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In addition to being explicitly invoked through calling , the CoerceValueCallback for a dependency property is also invoked internally whenever the dependency property value is being re-evaluated by the WPF property system.
When you invoke the method, you are ultimately invoking the coerce value callback for the property that you specify. Typically you will invoke only if you know that a coerce value callback exists, and if you know the callback's criteria for coercion.
The most common scenario for calling is within class handling or property change callbacks of related properties that influence each other's values in a dependent way. For more information, see Dependency Property Callbacks and Validation.
The following example calls within a PropertyChangedCallback implementation that is used as the PropertyChangedCallback for a different dependency properties on the same class. This is a common pattern for introducing true value dependencies between dependency properties.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2