An System.IFormatProvider representing the Format Provider that will be used to format the sting representation of the variable. a null reference (Nothing in Visual Basic) if a format provider was not specified on either the HeaderFooterElement or HeaderFooter.
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