DateTimeFormatInfo.CalendarWeekRule Property

Gets or sets a value that specifies which rule is used to determine the first calendar week of the year.

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)

public CalendarWeekRule CalendarWeekRule { get; set; }

Property Value

Type: System.Globalization.CalendarWeekRule
A CalendarWeekRule value that determines the first calendar week of the year. The default for InvariantInfo is FirstDay.


An attempt was made to set the property to a value that is not a valid CalendarWeekRule value.


The DateTimeFormatInfo object is read-only.

The calendar week rule, together with the FirstDayOfWeek property, defines the date ranges of the weeks of the year,

This property is affected if the value of the Calendar property changes.


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

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

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