'Declaration Public Class UltraCalcFunctionWeekNum Inherits BuiltInFunctionBase
public class UltraCalcFunctionWeekNum : BuiltInFunctionBase
WEEKNUM(date, returnType)
Date is a date.
ReturnType determines which day begins the week. 1 (default) = Sunday is the first day of the week. 2 = Monday is the first day of the week.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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