CultureInfo.OptionalCalendars 属性

public:
 virtual property cli::array <System::Globalization::Calendar ^> ^ OptionalCalendars { cli::array <System::Globalization::Calendar ^> ^ get(); };

public virtual System.Globalization.Calendar[] OptionalCalendars { get; }

member this.OptionalCalendars : System.Globalization.Calendar[]

Public Overridable ReadOnly Property OptionalCalendars As Calendar()

类型为 Calendar 的数组，表示当前 CultureInfo 代表的区域性所使用的日历。

下面的代码示例演示如何确定 GregorianCalendar 区域性支持的版本。

using namespace System;
using namespace System::Globalization;
using namespace System::Collections;
int main()
{
   
   // Calendar* myOptCals[] = new CultureInfo(S"ar-SA") -> OptionalCalendars;
   CultureInfo^ MyCI = gcnew CultureInfo( "ar-SA" );
   array<Calendar^>^myOptCals = MyCI->OptionalCalendars;
   
   // Checks which ones are GregorianCalendar then determines the GregorianCalendar version.
   Console::WriteLine( "The ar-SA culture supports the following calendars:" );
   IEnumerator^ myEnum = myOptCals->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Calendar^ cal = safe_cast<Calendar^>(myEnum->Current);
      if ( cal->GetType() == GregorianCalendar::typeid )
      {
         GregorianCalendar^ myGreCal = dynamic_cast<GregorianCalendar^>(cal);
         GregorianCalendarTypes calType = myGreCal->CalendarType;
         Console::WriteLine( " {0} ( {1})", cal, calType );
      }
      else
            Console::WriteLine( " {0}", cal );
   }
}

/*
This code produces the following output.

The ar-SA culture supports the following calendars:
 System.Globalization.HijriCalendar
 System.Globalization.GregorianCalendar ( USEnglish)
 System.Globalization.GregorianCalendar ( MiddleEastFrench)
 System.Globalization.GregorianCalendar ( Arabic)
 System.Globalization.GregorianCalendar ( Localized)
 System.Globalization.GregorianCalendar ( TransliteratedFrench)

*/

using System;
using System.Globalization;

public class SamplesCultureInfo  {

   public static void Main()  {

      // Gets the calendars supported by the ar-SA culture.
      Calendar[] myOptCals = new CultureInfo("ar-SA").OptionalCalendars;

      // Checks which ones are GregorianCalendar then determines the GregorianCalendar version.
      Console.WriteLine( "The ar-SA culture supports the following calendars:" );
      foreach ( Calendar cal in myOptCals )  {
         if ( cal.GetType() == typeof( GregorianCalendar ) )  {
            GregorianCalendar myGreCal = (GregorianCalendar) cal;
            GregorianCalendarTypes calType = myGreCal.CalendarType;
            Console.WriteLine( "   {0} ({1})", cal, calType );
         }
         else  {
            Console.WriteLine( "   {0}", cal );
         }
      }
   }
}

/*
This code produces the following output.

The ar-SA culture supports the following calendars:
   System.Globalization.HijriCalendar
   System.Globalization.GregorianCalendar (USEnglish)
   System.Globalization.GregorianCalendar (MiddleEastFrench)
   System.Globalization.GregorianCalendar (Arabic)
   System.Globalization.GregorianCalendar (Localized)
   System.Globalization.GregorianCalendar (TransliteratedFrench)

*/

Imports System.Globalization

Public Class SamplesCultureInfo

   Public Shared Sub Main()

      ' Gets the calendars supported by the ar-SA culture.
      Dim myOptCals As Calendar() = New CultureInfo("ar-SA").OptionalCalendars

      ' Checks which ones are GregorianCalendar then determines the GregorianCalendar version.
      Console.WriteLine("The ar-SA culture supports the following calendars:")
      Dim cal As Calendar
      For Each cal In  myOptCals
         If cal.GetType() Is GetType(GregorianCalendar)  Then
            Dim myGreCal As GregorianCalendar = CType(cal, GregorianCalendar)
            Dim calType As GregorianCalendarTypes = myGreCal.CalendarType
            Console.WriteLine("   {0} ({1})", cal, calType)
         Else
            Console.WriteLine("   {0}", cal)
         End If
      Next cal

   End Sub

End Class


'This code produces the following output.
'
'The ar-SA culture supports the following calendars:
'   System.Globalization.HijriCalendar
'   System.Globalization.GregorianCalendar (USEnglish)
'   System.Globalization.GregorianCalendar (MiddleEastFrench)
'   System.Globalization.GregorianCalendar (Arabic)
'   System.Globalization.GregorianCalendar (Localized)
'   System.Globalization.GregorianCalendar (TransliteratedFrench)

应用程序通过设置 Calendar 的 属性来更改当前 CultureInfo 使用的日历，该属性DateTimeFormat是 类的DateTimeFormatInfo实例。 新日历必须是 中列出的 OptionalCalendars日历之一。 DateTimeFormat 还包括自定义与该 Calendar关联的日期和时间格式的其他属性。

• Calendar
• DateTimeFormat
• DateTimeFormatInfo