Public Overloads Sub Invalidate( _
   ByVal region As Region, _
   ByVal invalidateChildren As System.Boolean _
) 

public void Invalidate( 
   Region region,
   System.bool invalidateChildren
)

Parameters

region

invalidateChildren

Target Platforms: 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

Reference