PersianCalendar.TwoDigitYearMax PersianCalendar.TwoDigitYearMax PersianCalendar.TwoDigitYearMax PersianCalendar.TwoDigitYearMax Property

Definizione

Ottiene o imposta l'ultimo anno che, nell'intervallo di un secolo, può essere rappresentato da un anno a due cifre.Gets or sets the last year of a 100-year range that can be represented by a 2-digit year.

public:
 virtual property int TwoDigitYearMax { int get(); void set(int value); };
public override int TwoDigitYearMax { get; set; }
member this.TwoDigitYearMax : int with get, set
Public Overrides Property TwoDigitYearMax As Integer

Valore della proprietà

L'ultimo anno che, nell'intervallo di un secolo, può essere rappresentato da un anno a due cifre.The last year of a 100-year range that can be represented by a 2-digit year.

Eccezioni

Questo calendario è in sola lettura.This calendar is read-only.

In un'operazione Set il valore è minore di 100 o maggiore di 9378.The value in a set operation is less than 100 or greater than 9378.

Esempi

Nell'esempio di codice riportato di seguito viene illustrato TwoDigitYearMax l'utilizzo della proprietà.The following code example demonstrates the use of the TwoDigitYearMax property.

using System;
using System.Globalization;
 
class Sample 
{
    public static void Main() 
    {
      PersianCalendar jc = new PersianCalendar();
      DateTime thisDate = DateTime.Now;
 
		//--------------------------------------------------------------------------------
		// Properties
		//--------------------------------------------------------------------------------
      Console.WriteLine("\n........... Selected Properties .....................\n");
      Console.Write("Eras:");
      foreach (int era in jc.Eras)
      {
         Console.WriteLine(" era = {0}", era);
      }
		//--------------------------------------------------------------------------------
      Console.WriteLine("\nTwoDigitYearMax = {0}", jc.TwoDigitYearMax);
		//--------------------------------------------------------------------------------
		// Methods
		//--------------------------------------------------------------------------------
      Console.WriteLine("\n............ Selected Methods .......................\n");
 
		//--------------------------------------------------------------------------------
      Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate));
		//--------------------------------------------------------------------------------
      Console.WriteLine("GetDaysInMonth: days = {0}", 
                        jc.GetDaysInMonth( thisDate.Year, thisDate.Month, 
                        PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
      Console.WriteLine("GetDaysInYear: days = {0}", 
                        jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
      Console.WriteLine("GetLeapMonth: leap month (if any) = {0}", 
                        jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra));
		//-------------------------------------------------------------
      Console.WriteLine("GetMonthsInYear: months in a year = {0}", 
                        jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapDay: This is a leap day = {0}", 
                        jc.IsLeapDay(thisDate.Year, thisDate.Month, thisDate.Day, 
                        PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapMonth: This is a leap month = {0}", 
                        jc.IsLeapMonth(thisDate.Year, thisDate.Month, 
                        PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}", 
                        jc.IsLeapYear(1370, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 
		// Get the 4-digit year for a year whose last two digits are 99. The 4-digit year 
		// depends on the current value of the TwoDigitYearMax property.
 
      Console.WriteLine("ToFourDigitYear:");
      Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", 
                         jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
      jc.TwoDigitYearMax = thisDate.Year;
      Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", 
                        jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
    }
}
// The example displays the following output:
//       ........... Selected Properties .....................
//       
//       Eras: era = 1
//       
//       TwoDigitYearMax = 99
//       
//       ............ Selected Methods .......................
//       
//       GetDayOfYear: day = 1
//       GetDaysInMonth: days = 31
//       GetDaysInYear: days = 365
//       GetLeapMonth: leap month (if any) = 0
//       GetMonthsInYear: months in a year = 12
//       IsLeapDay: This is a leap day = False
//       IsLeapMonth: This is a leap month = False
//       IsLeapYear: 1370 is a leap year = True
//       ToFourDigitYear:
//         If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
//         If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999
Imports System.Globalization

Class Sample
    Public Shared Sub Main()
        '--------------------------------------------------------------------------------
        ' Get today's date.
        '--------------------------------------------------------------------------------
        Dim jc As New PersianCalendar()
        Dim thisDate As Date = Date.Now

        '--------------------------------------------------------------------------------
        ' Properties
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "........... Selected Properties ....................." & vbCrLf)
        Console.Write("Eras:")
        Dim era As Integer
        For Each era In jc.Eras
            Console.WriteLine(" era = {0}", era)
        Next era
        '--------------------------------------------------------------------------------
        Console.WriteLine("TwoDigitYearMax = {0}", jc.TwoDigitYearMax)
        '--------------------------------------------------------------------------------
        ' Methods
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "............ Selected Methods ......................." & vbCrLf)

        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate))
        '--------------------------------------------------------------------------------

        Console.WriteLine("GetDaysInMonth: days = {0}", _
                           jc.GetDaysInMonth(thisDate.Year, _
                                             thisDate.Month, _
                                             PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDaysInYear: days = {0}", _
                          jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetLeapMonth: leap month (if any) = {0}", _
                           jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetMonthsInYear: months in a year = {0}", _
                           jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapDay: This is a leap day = {0}", _
                           jc.IsLeapDay(thisDate.Year, _
                                        thisDate.Month, thisDate.Day, _
                                        PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapMonth: This is a leap month = {0}", _
                           jc.IsLeapMonth(thisDate.Year, _
                                          thisDate.Month, _
                                          PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}", _
                           jc.IsLeapYear(1370, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------

        ' Get the 4-digit year for a year whose last two digits are 99. The 4-digit year 
        ' depends on the current value of the TwoDigitYearMax property.

        Console.WriteLine("ToFourDigitYear:")
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
        jc.TwoDigitYearMax = thisDate.Year
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
    End Sub
End Class 
' The example displays output like the following: 
'       ........... Seleted Properties .....................
'       
'       Eras: era = 1
'       
'       TwoDigitYearMax = 99
'       
'       ............ Selected Methods .......................
'       
'       GetDayOfYear: day = 1
'       GetDaysInMonth: days = 31
'       GetDaysInYear: days = 365
'       GetLeapMonth: leap month (if any) = 0
'       GetMonthsInYear: months in a year = 12
'       IsLeapDay: This is a leap day = False
'       IsLeapMonth: This is a leap month = False
'       IsLeapYear: 1370 is a leap year = True
'       ToFourDigitYear:
'         If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
'         If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999

Commenti

Questa proprietà consente a un anno a 2 cifre di essere convertito correttamente in un anno a 4 cifre.This property allows a 2-digit year to be properly translated to a 4-digit year. Se, ad esempio, questa proprietà è impostata su 2029, l'intervallo di 100 anni è compreso tra 1930 e 2029.For example, if this property is set to 2029, the 100-year range is from 1930 to 2029. Pertanto, un valore di 2 cifre pari a 30 viene interpretato come 1930, mentre un valore a 2 cifre pari a 29 viene interpretato come 2029.Therefore, a 2-digit value of 30 is interpreted as 1930, while a 2-digit value of 29 is interpreted as 2029.

Il valore iniziale di questa proprietà è derivato dalle impostazioni in Opzioni internazionali e della lingua nel pannello di controllo.The initial value of this property is derived from the settings in the regional and language options in Control Panel. Tuttavia, tali informazioni possono cambiare durante il ciclo di vita AppDomaindi.However, that information can change during the life of the AppDomain. La PersianCalendar classe non rileva automaticamente le modifiche apportate alle impostazioni di sistema.The PersianCalendar class does not detect changes in the system settings automatically. Se il calendario non è supportato nelle opzioni internazionali e della lingua, il valore iniziale di questa proprietà è il valore predefinito definito dalla classe Calendar.If the calendar is not supported in the regional and language options, the initial value of this property is the default value defined by the calendar class.

L'applicazione deve impostare questo valore su 99 per indicare che gli anni a 2 cifre devono essere presi letteralmente.The application should set this value to 99 to indicate that 2-digit years are to be taken literally. Se, ad esempio, questa proprietà è impostata su 99, l'intervallo 100-year è compreso tra 0 (non è un valore valido per la maggior parte dei calendari) e 99.For example, if this property is set to 99, the 100-year range is from 0 (not a valid value for most calendars) to 99. Pertanto, un valore di 2 cifre pari a 30 viene interpretato come 30.Therefore, a 2-digit value of 30 is interpreted as 30.

Si applica a

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