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FirstWeekOfYear Enumeration

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

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

'Declaration
Public Enumeration FirstWeekOfYear

Member nameDescription
SystemThe 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.
Jan1The week in which January 1 occurs (default) This member is equivalent to the Visual Basic constant vbFirstJan1.
FirstFourDaysThe first week that has at least four days in the new year This member is equivalent to the Visual Basic constant vbFirstFourDays.
FirstFullWeekThe first full week of the year This member is equivalent to the Visual Basic constant vbFirstFullWeek.

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.

Silverlight

Supported in: 5, 4, 3

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

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