Initializes a new instance of a class derived from MarkupExtension.
Assembly: System.Xaml (in System.Xaml.dll)
The MarkupExtension abstract class does not hold any private values that require initialization.Notes to Inheritors
A functional markup extension should define its own public default constructor. Additionally, the markup extension should implement constructors that are appropriate for the extension's intended capabilities and markup usage. For more information, see Markup Extensions for XAML Overview.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.