PropertyMetadata Constructor (Object)

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.

Namespace:   System.Windows
Assembly:  WindowsBase (in WindowsBase.dll)

public PropertyMetadata(
	object defaultValue


Type: System.Object

The default value to specify for a dependency property, usually provided as a value of some specific type.

Exception Condition

defaultValue cannot be set to the value UnsetValue; see Remarks.

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.

static PropertyMetadata pm;
pm = new PropertyMetadata(Double.NaN);

.NET Framework
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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