'Usage
Dim instance As RowReportStyle
Dim value As Boolean
value = instance.IsTopMarginDefined
Property Value
true if the TopMargin property has been explicitly set; false otherwise.
Requirements
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