Gets or sets the value that is used in the target when the value of the source is null.
Namespace:System.Windows.Data Assembly:PresentationFramework (in PresentationFramework.dll) XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
An attribute or object element value of the same type as the target property. See that type's documentation for XAML usage information. That type may or may not support attribute syntax for its values, or may or may not support object element syntax (which requires a default constructor on that type).
Type: System.Object The value that is used in the target when the value of the source is null.