class ISOWeek

in global :: System . Globalization

Provides static members to support the ISO week date that is part of the ISO 8601 date and time standard issued by the International Organization for Standardization (ISO).

public static int GetWeekOfYear( DateTime date )

Calculates the ISO week number of a given Gregorian date.

  • date A date in the Gregorian calendar.
  • Returns A number between 1 and 53 represnting the ISO week number of the given Gregorian date.

public static int GetWeeksInYear( int year )

calculates the number of weeks in a given ISO week-numbering year.

  • year An ISO week-numbering year (also called an ISO year informally).
  • Returns The number of ISO weeks in the year. Returns either 52 or 53.

public static int GetYear( DateTime date )

Calculates the ISO week-numbering year (also called ISO year informally) mapped to the input Gregorian date.

  • date A date in the Gregorian calendar.
  • Returns The ISO week-numbering year, between 1 and 9999

public static DateTime GetYearEnd( int year )

Calculates the Gregorian date at which the week-numbering year will end.

  • year An ISO week-numbering year (also called an ISO year informally).
  • Returns The Gregorian date at which the week-numbering year will end.

public static DateTime GetYearStart( int year )

Calculates the Gregorian date at which the week-numbering year will start.

  • year An ISO week-numbering year (also called an ISO year informally).
  • Returns The Gregorian date at which the week-numbering year will start.

public static DateTime ToDateTime( int year, int week, DayOfWeek dayOfWeek )

Maps the ISO week date represented by a specified ISO year, week number, and day of week to the equivalent Gregorian date.

  • year An ISO week-numbering year (also called an ISO year informally).
  • week The ISO week number in the given ISO week-numbering year.
  • dayOfWeek The day of week inside the given ISO week.
  • Returns The Gregorian date equivalent to the input ISO week date.

public Type GetType( )

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public string ToString( )

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public bool Equals( object obj )

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public int GetHashCode( )

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