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 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.