Assembly: System.Windows (in System.Windows.dll)
XMLNS for XAML: Not mapped to an xmlns.
Dependency property identifier field: TargetNameProperty
If the NavigateUriProperty property of a HyperlinkButton is set to an external Web page, you must provide a value TargetName property. It does not matter what value you use for this property, but if TargetName is not set and an external URI is specified, an exception will be thrown. If the URI is set to content within the same application, the URI must be a relative URI that begins with “/” or contains “;component/” and you must not set the property.