CultureInfo.OptionalCalendars 属性
获取该区域性可使用的日历的列表。
**命名空间:**System.Globalization
**程序集:**mscorlib（在 mscorlib.dll 中）
语法
声明
Public Overridable ReadOnly Property OptionalCalendars As Calendar()
用法
Dim instance As CultureInfo
Dim value As Calendar()
value = instance.OptionalCalendars
public virtual Calendar[] OptionalCalendars { get; }
public:
virtual property array<Calendar^>^ OptionalCalendars {
array<Calendar^>^ get ();
}
/** @property */
public Calendar[] get_OptionalCalendars ()
public function get OptionalCalendars () : Calendar[]
属性值
类型为 Calendar 的数组，表示当前 CultureInfo 代表的区域性所使用的日历。
备注
通过设置 DateTimeFormat（它是 DateTimeFormatInfo 类的实例）的 Calendar 属性，可以更改当前 CultureInfo 使用的日历。新日历必须是 OptionalCalendars 中所列出的日历之一。DateTimeFormat 还包括自定义与 Calendar 关联的日期和时间格式设置的其他属性。
示例
下面的代码示例演示了如何确定区域性支持的“GregorianCalendar”版本。
Imports System
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 'Main
End Class 'SamplesCultureInfo
'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)
*/
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)
*/
import System.* ;
import System.Globalization.* ;
public class SamplesCultureInfo
{
public static void main(String[] args)
{
// Gets the calendars supported by the ar-SA culture.
Calendar myOptCals[] = (new CultureInfo("ar-SA")).
get_OptionalCalendars();
// Checks which ones are GregorianCalendar then determines the
// GregorianCalendar version.
Console.WriteLine
("The ar-SA culture supports the following calendars:");
for (int iCtr = 0; iCtr < myOptCals.length; iCtr++) {
Calendar cal = myOptCals[iCtr];
if (cal.GetType() == GregorianCalendar.class.ToType()) {
GregorianCalendar myGreCal = ((GregorianCalendar)(cal));
GregorianCalendarTypes calType = myGreCal.get_CalendarType();
Console.WriteLine(" {0} ({1})", cal, calType);
}
else {
Console.WriteLine(" {0}", cal);
}
}
} //main
} //SamplesCultureInfo
/*
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)
*/
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0、1.0
请参见
参考
CultureInfo 类
CultureInfo 成员
System.Globalization 命名空间
Calendar 类
CultureInfo.DateTimeFormat 属性
DateTimeFormatInfo