PropertyMetadata Constructor (Object)
Initializes a new instance of the PropertyMetadata class with a specified default value for the dependency property that this metadata will be applied to.
Assembly: WindowsBase (in WindowsBase.dll)
The type of the value provided for defaultValue must be match or be related to the type specified in the original registration of the dependency property that this metadata will be applied to. Mismatches between metadata default value type and the type of the dependency property it is being applied to can be difficult to debug, because the mismatch is not detectable during compilation (the mismatch will raise a run-time exception).
Although it is the default per the parameterless constructor, a defaultValue of UnsetValue cannot be specified. Attempting to do so will raise an exception.