Assembly: PresentationFramework (in PresentationFramework.dll)
The main purpose of this method is to support attached property syntax for the FlowDirection property, therefore allowing child elements of a provided FrameworkElement to specify flow direction for the arrangement within their parent element. To get the value on the current FrameworkElement, use the direct common language runtime (CLR) accessor FlowDirection.
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.