Calendar.GetWeekOfYear(DateTime, CalendarWeekRule, DayOfWeek) Método

Definición

Devuelve la semana del año que incluye la fecha en el valor DateTime especificado.Returns the week of the year that includes the date in the specified DateTime value.

public:
 virtual int GetWeekOfYear(DateTime time, System::Globalization::CalendarWeekRule rule, DayOfWeek firstDayOfWeek);
public virtual int GetWeekOfYear (DateTime time, System.Globalization.CalendarWeekRule rule, DayOfWeek firstDayOfWeek);
abstract member GetWeekOfYear : DateTime * System.Globalization.CalendarWeekRule * DayOfWeek -> int
override this.GetWeekOfYear : DateTime * System.Globalization.CalendarWeekRule * DayOfWeek -> int
Public Overridable Function GetWeekOfYear (time As DateTime, rule As CalendarWeekRule, firstDayOfWeek As DayOfWeek) As Integer

Parámetros

time
DateTime

Valor de fecha y hora.A date and time value.

rule
CalendarWeekRule

Valor de enumeración que define una semana del calendario.An enumeration value that defines a calendar week.

firstDayOfWeek
DayOfWeek

Valor de enumeración que representa el primer día de la semana.An enumeration value that represents the first day of the week.

Devoluciones

Un entero positivo que representa la semana del año que incluye la fecha del parámetro time.A positive integer that represents the week of the year that includes the date in the time parameter.

Excepciones

time es anterior que MinSupportedDateTime o posterior que MaxSupportedDateTime.time is earlier than MinSupportedDateTime or later than MaxSupportedDateTime.

O bien-or- firstDayOfWeek no es un valor DayOfWeek válido.firstDayOfWeek is not a valid DayOfWeek value.

o bien-or- rule no es un valor CalendarWeekRule válido.rule is not a valid CalendarWeekRule value.

Ejemplos

En el ejemplo de código siguiente se muestra cómo GetWeekOfYear el resultado de varía en función de CalendarWeekRuleydelutilizado FirstDayOfWeek .The following code example shows how the result of GetWeekOfYear varies depending on the FirstDayOfWeek and the CalendarWeekRule used. Si la fecha especificada es el último día del año, GetWeekOfYear devuelve el número total de semanas de ese año.If the specified date is the last day of the year, GetWeekOfYear returns the total number of weeks in that year.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Gets the Calendar instance associated with a CultureInfo.
   CultureInfo^ myCI = gcnew CultureInfo( "en-US" );
   Calendar^ myCal = myCI->Calendar;
   
   // Gets the DTFI properties required by GetWeekOfYear.
   CalendarWeekRule myCWR = myCI->DateTimeFormat->CalendarWeekRule;
   DayOfWeek myFirstDOW = myCI->DateTimeFormat->FirstDayOfWeek;
   
   // Displays the number of the current week relative to the beginning of the year.
   Console::WriteLine( "The CalendarWeekRule used for the en-US culture is {0}.", myCWR );
   Console::WriteLine( "The FirstDayOfWeek used for the en-US culture is {0}.", myFirstDOW );
   Console::WriteLine( "Therefore, the current week is Week {0} of the current year.", myCal->GetWeekOfYear( DateTime::Now, myCWR, myFirstDOW ) );
   
   // Displays the total number of weeks in the current year.
   DateTime LastDay = System::DateTime( DateTime::Now.Year, 12, 31 );
   Console::WriteLine( "There are {0} weeks in the current year ( {1}).", myCal->GetWeekOfYear( LastDay, myCWR, myFirstDOW ), LastDay.Year );
}

/*
This code produces the following output.  Results vary depending on the system date.

The CalendarWeekRule used for the en-US culture is FirstDay.
The FirstDayOfWeek used for the en-US culture is Sunday.
Therefore, the current week is Week 1 of the current year.
There are 53 weeks in the current year (2001).
*/
using System;
using System.Globalization;


public class SamplesCalendar  {

   public static void Main()  {

      // Gets the Calendar instance associated with a CultureInfo.
      CultureInfo myCI = new CultureInfo("en-US");
      Calendar myCal = myCI.Calendar;

      // Gets the DTFI properties required by GetWeekOfYear.
      CalendarWeekRule myCWR = myCI.DateTimeFormat.CalendarWeekRule;
      DayOfWeek myFirstDOW = myCI.DateTimeFormat.FirstDayOfWeek;

      // Displays the number of the current week relative to the beginning of the year.
      Console.WriteLine( "The CalendarWeekRule used for the en-US culture is {0}.", myCWR );
      Console.WriteLine( "The FirstDayOfWeek used for the en-US culture is {0}.", myFirstDOW );
      Console.WriteLine( "Therefore, the current week is Week {0} of the current year.", myCal.GetWeekOfYear( DateTime.Now, myCWR, myFirstDOW ));

      // Displays the total number of weeks in the current year.
      DateTime LastDay = new System.DateTime( DateTime.Now.Year, 12, 31 );
      Console.WriteLine( "There are {0} weeks in the current year ({1}).", myCal.GetWeekOfYear( LastDay, myCWR, myFirstDOW ), LastDay.Year );

   }

}

/*
This code produces the following output.  Results vary depending on the system date.

The CalendarWeekRule used for the en-US culture is FirstDay.
The FirstDayOfWeek used for the en-US culture is Sunday.
Therefore, the current week is Week 1 of the current year.
There are 53 weeks in the current year (2001).

*/
Imports System.Globalization

Public Class SamplesCalendar

   Public Shared Sub Main()
      
      ' Gets the Calendar instance associated with a CultureInfo.
      Dim myCI As New CultureInfo("en-US")
      Dim myCal As Calendar = myCI.Calendar
      
      ' Gets the DTFI properties required by GetWeekOfYear.
      Dim myCWR As CalendarWeekRule = myCI.DateTimeFormat.CalendarWeekRule
      Dim myFirstDOW As DayOfWeek = myCI.DateTimeFormat.FirstDayOfWeek
      
      ' Displays the number of the current week relative to the beginning of the year.
      Console.WriteLine("The CalendarWeekRule used for the en-US culture is {0}.", myCWR)
      Console.WriteLine("The FirstDayOfWeek used for the en-US culture is {0}.", myFirstDOW)
      Console.WriteLine("Therefore, the current week is Week {0} of the current year.", myCal.GetWeekOfYear(DateTime.Now, myCWR, myFirstDOW))
      
      ' Displays the total number of weeks in the current year.
      Dim LastDay = New System.DateTime(DateTime.Now.Year, 12, 31)
      Console.WriteLine("There are {0} weeks in the current year ({1}).", myCal.GetWeekOfYear(LastDay, myCWR, myFirstDOW), LastDay.Year)
   End Sub
End Class


'This code produces the following output.  Results vary depending on the system date.
'
'The CalendarWeekRule used for the en-US culture is FirstDay.
'The FirstDayOfWeek used for the en-US culture is Sunday.
'Therefore, the current week is Week 1 of the current year.
'There are 53 weeks in the current year (2001).

Comentarios

Este método se puede utilizar para determinar el número de semanas del año estableciendo time en el último día del año.This method can be used to determine the number of weeks in the year by setting time to the last day of the year.

El DateTimeFormatInfo objeto para una referencia cultural determinada que usa el calendario indicado por DateTimeFormatInfo.Calendar la propiedad incluye los siguientes valores específicos de la referencia cultural que se pueden rule usar firstDayOfWeek para los parámetros y:The DateTimeFormatInfo object for a particular culture that uses the calendar indicated by the DateTimeFormatInfo.Calendar property includes the following culture-specific values that can be used for the rule and firstDayOfWeek parameters:

En el ejemplo siguiente se usa el objeto DateTimeFormatInfo de la referencia cultural actual para determinar que el 1 de enero de 2011 está en la primera semana del año del calendario gregoriano.The following example uses the current culture's DateTimeFormatInfo object to determine that January 1, 2011 is in the first week of the year in the Gregorian calendar.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      DateTimeFormatInfo dfi = DateTimeFormatInfo.CurrentInfo;
      DateTime date1 = new DateTime(2011, 1, 1);
      Calendar cal = dfi.Calendar;
      
      Console.WriteLine("{0:d}: Week {1} ({2})", date1, 
                        cal.GetWeekOfYear(date1, dfi.CalendarWeekRule, 
                                          dfi.FirstDayOfWeek),
                        cal.ToString().Substring(cal.ToString().LastIndexOf(".") + 1));       
   }
}
// The example displays the following output:
//       1/1/2011: Week 1 (GregorianCalendar)
Imports System.Globalization

Module Example
   Public Sub Main()
      Dim dfi As DateTimeFormatInfo = DateTimeFormatInfo.CurrentInfo
      Dim date1 As Date = #1/1/2011#
      Dim cal As Calendar = dfi.Calendar
      
      Console.WriteLine("{0:d}: Week {1} ({2})", date1, 
                        cal.GetWeekOfYear(date1, dfi.CalendarWeekRule, 
                                          dfi.FirstDayOfWeek),
                        cal.ToString().Substring(cal.ToString().LastIndexOf(".") + 1))       
   End Sub
End Module
' The example displays the following output:
'       1/1/2011: Week 1 (GregorianCalendar)

En GetWeekOfYear algunos calendarios, una llamada al método produce una ArgumentOutOfRangeException para combinaciones concretas de rule valores y firstDayOfWeek , incluso si time es mayor que la fecha devuelta por la propiedad de MinSupportedDateTime ese calendario.For some calendars, a call to the GetWeekOfYear method throws an ArgumentOutOfRangeException for particular combinations of rule and firstDayOfWeek values even if time is greater than the date returned by that calendar's MinSupportedDateTime property. En la tabla siguiente se enumeran los calendarios afectados rule , los valores específicos y el intervalo de los valores time admitidos más antiguos.The following table lists the affected calendars, the specific rule values, and the range of the earliest supported time values. El valor mínimo DateTime específico depende del valor firstDayOfWeek del parámetro.The specific minimum DateTime value depends on the value of the firstDayOfWeek parameter.

CalendarioCalendar Valor de CalendarWeekRuleCalendarWeekRule value Fecha Gregoriana (M/DD/AAAA)Gregorian date (M/dd/yyyy) Fecha en el calendario (M/DD/AAAA)Date in calendar (M/dd/yyyy)
ChineseLunisolarCalendar FirstFullWeek de 2/19/1901 a 2/25/19012/19/1901 to 2/25/1901 de 1/1/1901 a 1/7/19011/1/1901 to 1/7/1901
ChineseLunisolarCalendar FirstFourDayWeek de 2/19/1901 a 2/22/19012/19/1901 to 2/22/1901 de 1/01/1901 a 1/04/19011/01/1901 to 1/04/1901
HebrewCalendar FirstDay 9/17/15839/17/1583 1/01/53441/01/5344
HebrewCalendar FirstFullWeek de 9/17/1583 a 9/23/15839/17/1583 to 9/23/1583 de 1/01/5344 a 1/07/53441/01/5344 to 1/07/5344
HebrewCalendar FirstFourDayWeek de 9/17/1583 a 9/20/15839/17/1583 to 9/20/1583 de 1/01/5344 a 1/04/53441/01/5344 to 1/04/5344
HijriCalendar FirstFullWeek de 7/18/0622 a 7/24/06227/18/0622 to 7/24/0622 de 1/01/0001 a 1/07/00011/01/0001 to 1/07/0001
HijriCalendar FirstFourDayWeek de 7/18/0622 a 7/21/06227/18/0622 to 7/21/0622 de 1/01/0001 a 1/04/00011/01/0001 to 1/04/0001
JapaneseLunisolarCalendar FirstFullWeek de 1/28/1960 a 2/03/19601/28/1960 to 2/03/1960 de 1/01/35 a 1/07/00351/01/35 to 1/07/0035
JapaneseLunisolarCalendar FirstFourDayWeek de 1/28/1960 a 1/31/19601/28/1960 to 1/31/1960 de 1/01/0035 a 1/04/00351/01/0035 to 1/04/0035
JulianCalendar FirstFullWeek de 1/01/0001 a 1/05/00011/01/0001 to 1/05/0001 de 1/03/0001 a 1/07/00011/03/0001 to 1/07/0001
JulianCalendar FirstFourDayWeek de 1/01/0001 a 1/02/00011/01/0001 to 1/02/0001 de 1/03/0001 a 1/04/00011/03/0001 to 1/04/0001
KoreanLunisolarCalendar FirstFullWeek de 2/14/0918 a 2/20/09182/14/0918 to 2/20/0918 de 1/01/0918 a 1/07/09181/01/0918 to 1/07/0918
KoreanLunisolarCalendar FirstFourDayWeek de 2/14/0918 a 2/17/09182/14/0918 to 2/17/0918 de 1/01/0918 a 1/04/09181/01/0918 to 1/04/0918
PersianCalendar FirstFullWeek de 3/21/0622 a 3/27/06223/21/0622 to 3/27/0622 de 1/01/0001 a 1/07/00011/01/0001 to 1/07/0001
PersianCalendar FirstFourDayWeek de 3/21/0622 a 3/24/06223/21/0622 to 3/24/0622 de 1/01/0001 a 1/04/00011/01/0001 to 1/04/0001
TaiwanLunisolarCalendar FirstFullWeek de 2/18/1912 a 2/24/19122/18/1912 to 2/24/1912 de 1/01/0001 a 1/07/00011/01/0001 to 1/07/0001
TaiwanLunisolarCalendar FirstFourDayWeek de 2/18/1912 a 2/21/19122/18/1912 to 2/21/1912 de 1/01/0001 a 1/04/00011/01/0001 to 1/04/0001
UmAlQuraCalendar FirstFullWeek de 4/30/1900 a 5/06/19004/30/1900 to 5/06/1900 de 1/01/1318 a 1/07/13181/01/1318 to 1/07/1318
UmAlQuraCalendar FirstFourDayWeek de 4/30/1900 a 5/03/19004/30/1900 to 5/03/1900 de 1/01/1318 a 1/04/13181/01/1318 to 1/04/1318

Se aplica a

Consulte también: