TaiwanCalendar.GetWeekOfYear(DateTime, CalendarWeekRule, DayOfWeek) Метод

public:
 override int GetWeekOfYear(DateTime time, System::Globalization::CalendarWeekRule rule, DayOfWeek firstDayOfWeek);

public override int GetWeekOfYear(DateTime time, System.Globalization.CalendarWeekRule rule, DayOfWeek firstDayOfWeek);

[System.Runtime.InteropServices.ComVisible(false)]
public override int GetWeekOfYear(DateTime time, System.Globalization.CalendarWeekRule rule, DayOfWeek firstDayOfWeek);

override this.GetWeekOfYear : DateTime * System.Globalization.CalendarWeekRule * DayOfWeek -> int

[<System.Runtime.InteropServices.ComVisible(false)>]
override this.GetWeekOfYear : DateTime * System.Globalization.CalendarWeekRule * DayOfWeek -> int

Public Overrides Function GetWeekOfYear (time As DateTime, rule As CalendarWeekRule, firstDayOfWeek As DayOfWeek) As Integer

Параметры

Возвращаемое значение

Положительное целое число, представляющее неделю года, включающее дату в time параметре.

Атрибуты

ComVisibleAttribute

Исключения

Примеры

В следующем примере кода показано, как GetWeekOfYear результат зависит от используемых значений и CalendarWeekRule значенийFirstDayOfWeek. Если указанная дата является последним днем года, GetWeekOfYear возвращает общее количество недель в этом году.

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).

Комментарии

Этот метод можно использовать для определения количества недель в году, задав time параметр в последний день года.

Свойство CultureInfo.DateTimeFormat содержит значения, зависящие от языка и региональных параметров, которые можно использовать для rule параметров и firstDayOfWeek региональных параметров.

Свойство FirstDayOfWeek содержит значение по умолчаниюDayOfWeek, представляющее первый день недели для определенного языка и региональных параметров, используя календарь, указанный в свойстве CalendarCultureInfo.DateTimeFormat.CultureInfo.DateTimeFormat

Свойство CalendarWeekRule содержит значение по умолчанию, определяющее календарь CalendarWeekRule недели для определенного языка и региональных параметров, используя календарь, указанный в свойстве CalendarCultureInfo.DateTimeFormat.CultureInfo.DateTimeFormat

Например, в GregorianCalendarметоде GetWeekOfYear 1 января возвращается 1.