Assembly: Microsoft.VisualBasic (in microsoft.visualbasic.dll)
|FirstFourDays||The first week that has at least four days in the new year This member is equivalent to the Visual Basic constant vbFirstFourDays.|
|FirstFullWeek||The first full week of the year This member is equivalent to the Visual Basic constant vbFirstFullWeek.|
|Jan1||The week in which January 1 occurs (default) This member is equivalent to the Visual Basic constant vbFirstJan1.|
|System||The day of the week specified in your system settings as the first day of the week This member is equivalent to the Visual Basic constant vbUseSystem.|
For more detailed information, see the Visual Basic topic FirstWeekOfYear Enumeration.
When you call date-related functions, you can use the following enumeration members in your code in place of the actual values.
Some date-related functions take a DayOfWeek argument, a WeekOfYear argument, or both. The FirstWeekOfYear enumeration specifies the valid values for the WeekOfYear arguments, as well as the possible return values from the functions.
The WeekOfYear argument takes the FirstWeekOfYear enumeration members.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.
Other ResourcesFirstWeekOfYear Enumeration
Intrinsic Constants and Enumerations
DateDiff Function (Visual Basic)
DatePart Function (Visual Basic)
When to Use an Enumeration
How to: Refer to an Enumeration Member