Articolo
11/18/2011

FirstWeekOfYear Enumeration

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Indicates the first week of the year to use when calling date-related functions.

Namespace: Microsoft.VisualBasic
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

Syntax

'Declaration
Public Enumeration FirstWeekOfYear

public enum FirstWeekOfYear

Members

	Member name	Description
	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.
	Jan1	The week in which January 1 occurs (default) This member is equivalent to the Visual Basic constant vbFirstJan1.
	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.

Remarks

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.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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