DateTimeFormatInfo.Calendar 属性

public:
 property System::Globalization::Calendar ^ Calendar { System::Globalization::Calendar ^ get(); void set(System::Globalization::Calendar ^ value); };

public System.Globalization.Calendar Calendar { get; set; }

member this.Calendar : System.Globalization.Calendar with get, set

Public Property Calendar As Calendar

属性值

用于当前区域性的日历。 InvariantInfo 的默认值是一个 GregorianCalendar 对象。

例外

示例

下面的示例定义一个 ChangeCalendar 方法，该方法将区域性的当前日历更改为指定的日历，除非它已经是当前日历或区域性不支持它。 调用 方法的代码实例化一个 CultureInfo 对象，该对象表示阿拉伯语 (埃及) 区域性，并首次尝试将其日历更改为日本日历。 由于不支持日语日历， 方法使 不更改区域性的日历。 但是，由于 um al-Qura 日历是 集合的成员 CultureInfo.OptionalCalendars ，因此 该方法确实成功地使其成为 ar-EG 区域性的当前日历。

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CultureInfo ci = CultureInfo.CreateSpecificCulture("ar-EG");
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name,
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar));

      CalendarUtilities.ChangeCalendar(ci, new JapaneseCalendar());
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name,
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar));

      CalendarUtilities.ChangeCalendar(ci, new UmAlQuraCalendar());
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name,
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar));
   }
}

public class CalendarUtilities
{
   private Calendar newCal;
   private bool isGregorian;

   public static void ChangeCalendar(CultureInfo ci, Calendar cal)
   {
      CalendarUtilities util = new CalendarUtilities(cal);

      // Is the new calendar already the current calendar?
      if (util.CalendarExists(ci.DateTimeFormat.Calendar))
         return;

      // Is the new calendar supported?
      if (Array.Exists(ci.OptionalCalendars, util.CalendarExists))
         ci.DateTimeFormat.Calendar = cal;
   }

   private CalendarUtilities(Calendar cal)
   {
      newCal = cal;

      // Is the new calendar a Gregorian calendar?
      isGregorian = cal.GetType().Name.Contains("Gregorian");
   }

   private bool CalendarExists(Calendar cal)
   {
      if (cal.ToString() == newCal.ToString()) {
         if (isGregorian) {
            if (((GregorianCalendar) cal).CalendarType ==
               ((GregorianCalendar) newCal).CalendarType)
               return true;
         }
         else {
            return true;
         }
      }
      return false;
   }

   public static string ShowCalendarName(Calendar cal)
   {
      string calName = cal.ToString().Replace("System.Globalization.", "");
      if (cal is GregorianCalendar)
         calName += ", Type " + ((GregorianCalendar) cal).CalendarType.ToString();

      return calName;
   }
}
// The example displays the following output:
//    The current calendar for the ar-EG culture is GregorianCalendar, Type Localized
//    The current calendar for the ar-EG culture is GregorianCalendar, Type Localized
//    The current calendar for the ar-EG culture is UmAlQuraCalendar

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CultureInfo = CultureInfo.CreateSpecificCulture("ar-EG")
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name, 
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar))

      CalendarUtilities.ChangeCalendar(ci, New JapaneseCalendar())
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name, 
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar))
      
      CalendarUtilities.ChangeCalendar(ci, New UmAlQuraCalendar())
      Console.WriteLine("The current calendar for the {0} culture is {1}",
                        ci.Name, 
                        CalendarUtilities.ShowCalendarName(ci.DateTimeFormat.Calendar))
   End Sub
End Module

Public Class CalendarUtilities
   Private newCal As Calendar
   Private isGregorian As Boolean
   
   Public Shared Sub ChangeCalendar(ci As CultureInfo, cal As Calendar)
      Dim util As New CalendarUtilities(cal)
      
      ' Is the new calendar already the current calendar?
      If util.CalendarExists(ci.DateTimeFormat.Calendar) Then
         Exit Sub
      End If

      ' Is the new calendar supported?
      If Array.Exists(ci.OptionalCalendars, AddressOf util.CalendarExists) Then
         ci.DateTimeFormat.Calendar = cal
      End If
   End Sub
   
   Private Sub New(cal As Calendar)
      newCal = cal
      
      ' Is the new calendar a Gregorian calendar?
      isGregorian = cal.GetType().Name.Contains("Gregorian")
   End Sub
   
   Private Function CalendarExists(cal As Calendar) As Boolean
      If cal.ToString() = newCal.ToString Then
         If isGregorian Then
            If CType(cal, GregorianCalendar).CalendarType = 
               CType(newCal, GregorianCalendar).CalendarType Then
               Return True
            End If
         Else
            Return True
         End If
      End If
      Return False
   End Function

   Public Shared Function ShowCalendarName(cal As Calendar) As String
      Dim calName As String = cal.ToString().Replace("System.Globalization.", "")
      If TypeOf cal Is GregorianCalendar Then
         calName += ", Type " + CType(cal, GregorianCalendar).CalendarType.ToString()
      End If
      Return calName 
   End Function
End Class
' The example displays the following output:
'    The current calendar for the ar-EG culture is GregorianCalendar, Type Localized
'    The current calendar for the ar-EG culture is GregorianCalendar, Type Localized
'    The current calendar for the ar-EG culture is UmAlQuraCalendar

注解

属性 Calendar 仅接受对与 DateTimeFormatInfo 对象关联的区域性有效的日历。 属性 CultureInfo.OptionalCalendars 指定特定区域性可以使用的日历，属性 CultureInfo.Calendar 指定区域性的默认日历。

更改此属性的值也会影响以下属性：MonthNames、、、AbbreviatedMonthNames、FirstDayOfWeekFullDateTimePatternDayNamesAbbreviatedDayNamesCalendarWeekRule、LongDatePattern、ShortDatePattern、、 YearMonthPattern和 。MonthDayPattern

例如，如果当前线程的区域性为日语，则此属性接受 JapaneseCalendar、GregorianCalendarLocalized 或 USEnglishGregorianCalendar。 JapaneseCalendar使用 时，默认的长日期说明符为“gg y'\x5e74'M'\x6708'd'\x65e5'”。 Localized GregorianCalendar使用 时，默认的长日期说明符为“yyyy'\x5e74'M'\x6708'd'\x65e5'”。

适用于

另请参阅

• Calendar