Calendar.GetWeekOfYear(DateTime, CalendarWeekRule, DayOfWeek) Método
Definición
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:
La DateTimeFormatInfo.FirstDayOfWeek propiedad contiene el primer día predeterminado de la semana que se puede usar para el
firstDayOfWeek
parámetro.The DateTimeFormatInfo.FirstDayOfWeek property contains the default first day of the week that can be used for thefirstDayOfWeek
parameter.La DateTimeFormatInfo.CalendarWeekRule propiedad contiene la regla de calendario semanal predeterminada que se puede usar para
rule
el parámetro.The DateTimeFormatInfo.CalendarWeekRule property contains the default calendar week rule that can be used for therule
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 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 |