PersianCalendar.ToFourDigitYear(Int32) PersianCalendar.ToFourDigitYear(Int32) PersianCalendar.ToFourDigitYear(Int32) PersianCalendar.ToFourDigitYear(Int32) Method

Definizione

Converte l'anno specificato in una rappresentazione a quattro cifre.Converts the specified year to a four-digit year representation.

public:
 override int ToFourDigitYear(int year);
public override int ToFourDigitYear (int year);
override this.ToFourDigitYear : int -> int
Public Overrides Function ToFourDigitYear (year As Integer) As Integer

Parametri

year
Int32 Int32 Int32 Int32

Intero compreso tra 1 e 9378 che rappresenta l'anno da convertire.An integer from 1 through 9378 that represents the year to convert.

Restituisce

Intero che contiene la rappresentazione a quattro cifre di year.An integer that contains the four-digit representation of year.

Eccezioni

year è minore di 0 o maggiore di 9378.year is less than 0 or greater than 9378.

Esempi

Nell'esempio di codice riportato di seguito viene illustrato ToFourDigitYear l'utilizzo del metodo.The following code example demonstrates the use of the ToFourDigitYear method.

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

Questo metodo converte il year parametro in una rappresentazione dell'anno a quattro cifre utilizzando TwoDigitYearMax la proprietà.This method converts the year parameter to a four-digit year representation using the TwoDigitYearMax property. Il valore restituito è il limite superiore di un intervallo di 100 anni che consente a un anno a due cifre di essere convertito correttamente in un anno a quattro cifre.The return value is the upper boundary of a 100-year range that allows a two-digit year to be properly translated to a four-digit year. Se, ad esempio, l'intervallo 100 anni è compreso tra 1930 e 2029, un valore a due cifre pari a 30 viene interpretato come 1930 mentre un valore a due cifre pari a 29 viene interpretato come 2029.For example, if the 100-year range is from 1930 through 2029, then a two-digit value of 30 is interpreted as 1930 while a two-digit value of 29 is interpreted as 2029.

ToFourDigitYearsupporta un anno a due cifre o un anno a quattro cifre.ToFourDigitYear supports either a two-digit year or a four-digit year. Se si passa un valore di anno a due cifre (minore di 100), il metodo convertirà il valore in un valore a quattro cifre TwoDigitYearMax , in base al valore che rappresenta il secolo appropriato.Passing a two-digit year value (less than 100) causes the method to convert the value to a four-digit value according to the TwoDigitYearMax value representing the appropriate century. Se l'applicazione fornisce un valore di anno a quattro cifre compreso nell'intervallo di calendario supportato a ToFourDigitYear, il metodo restituisce il valore di input effettivo.If the application supplies a four-digit year value that is within the supported calendar range to ToFourDigitYear, the method returns the actual input value. Se l'applicazione fornisce un valore a quattro cifre che non rientra nell'intervallo di calendario supportato o se fornisce un valore negativo, il metodo genera un'eccezione.If the application supplies a four-digit value that is outside the supported calendar range, or if it supplies a negative value, the method throws an exception.

Si applica a

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