Calendar.GetWeekOfYear(DateTime, CalendarWeekRule, DayOfWeek) Método

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

Devoluciones

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo el resultado de GetWeekOfYear varía en función del FirstDayOfWeek y de la CalendarWeekRule utilizada.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 usar 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 objeto DateTimeFormatInfo para una referencia cultural determinada que usa el calendario indicado por la propiedad DateTimeFormatInfo.Calendar incluye los siguientes valores específicos de la referencia cultural que se pueden usar para los parámetros rule y firstDayOfWeek: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:

• La propiedad DateTimeFormatInfo.FirstDayOfWeek contiene el primer día predeterminado de la semana que se puede usar para el parámetro firstDayOfWeek.The DateTimeFormatInfo.FirstDayOfWeek property contains the default first day of the week that can be used for the firstDayOfWeek parameter.

• La propiedad DateTimeFormatInfo.CalendarWeekRule contiene la regla de calendario semanal predeterminada que se puede usar para el parámetro rule.The DateTimeFormatInfo.CalendarWeekRule property contains the default calendar week rule that can be used for the rule parameter.

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 algunos calendarios, una llamada al método GetWeekOfYear produce una ArgumentOutOfRangeException para combinaciones particulares de valores de rule y firstDayOfWeek incluso si time es mayor que la fecha devuelta por la propiedad MinSupportedDateTime de 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, los valores de rule específicos y el intervalo de los valores de 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 de DateTime mínimo específico depende del valor del parámetro firstDayOfWeek.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:

• DateTime
• CalendarWeekRule
• DayOfWeek
• GetEra(DateTime)
• GetYear(DateTime)
• GetMonth(DateTime)
• GetDayOfYear(DateTime)
• GetDayOfMonth(DateTime)
• GetDayOfWeek(DateTime)
• GetHour(DateTime)
• GetMinute(DateTime)
• GetSecond(DateTime)
• GetMilliseconds(DateTime)