DateTimeFormatInfo.GetEra(String) DateTimeFormatInfo.GetEra(String) DateTimeFormatInfo.GetEra(String) DateTimeFormatInfo.GetEra(String) Method

Definizione

Restituisce l'intero che rappresenta l'era specificata.Returns the integer representing the specified era.

public:
 int GetEra(System::String ^ eraName);
public int GetEra (string eraName);
member this.GetEra : string -> int
Public Function GetEra (eraName As String) As Integer

Parametri

eraName
String String String String

Stringa contenente il nome dell'era.The string containing the name of the era.

Restituisce

Valore intero che rappresenta l'era, se eraName è valido. In caso contrario -1.The integer representing the era, if eraName is valid; otherwise, -1.

Eccezioni

Esempi

Nell'esempio seguente viene illustrato DateTimeFormatInfo che ignora la punteggiatura nel nome dell'era, solo se il calendario è gregoriano e le impostazioni cultura utilizzano il nome dell'era "A.D.".The following example shows that DateTimeFormatInfo ignores the punctuation in the era name, only if the calendar is Gregorian and the culture uses the era name "A.D.".

using namespace System;
using namespace System::Globalization;
using namespace System::Collections;
int main()
{
   
   // Creates strings with punctuation and without.
   String^ strADPunc = "A.D.";
   String^ strADNoPunc = "AD";
   String^ strCEPunc = "C.E.";
   String^ strCENoPunc = "CE";
   
   // Calls DTFI::GetEra for each culture that uses GregorianCalendar as the default calendar.
   Console::WriteLine( "            ----- AD -----  ----- CE -----" );
   Console::WriteLine( "CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR" );
   IEnumerator^ en = CultureInfo::GetCultures( CultureTypes::SpecificCultures )->GetEnumerator();
   while ( en->MoveNext() )
   {
      CultureInfo^ myCI = safe_cast<CultureInfo^>(en->Current);
      Console::Write( "{0, -12}", myCI );
      Console::Write( "{0,-7}{1,-9}", myCI->DateTimeFormat->GetEra( strADPunc ), myCI->DateTimeFormat->GetEra( strADNoPunc ) );
      Console::Write( "{0, -7}{1, -9}", myCI->DateTimeFormat->GetEra( strCEPunc ), myCI->DateTimeFormat->GetEra( strCENoPunc ) );
      Console::Write( "{0}", myCI->Calendar );
      Console::WriteLine();
   }
}

/*
This code produces the following output.  This output has been cropped for brevity.

            ----- AD -----  ----- CE -----
CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR
ar-SA       -1     -1       -1     -1       System.Globalization.HijriCalendar
ar-IQ       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-EG       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-LY       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-DZ       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-MA       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-TN       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-OM       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-YE       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-SY       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-JO       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-LB       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-KW       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-AE       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-BH       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-QA       1      1        -1     -1       System.Globalization.GregorianCalendar
bg-BG       1      1        -1     -1       System.Globalization.GregorianCalendar
ca-ES       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-TW       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-CN       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-HK       1      1        -1     -1       System.Globalization.GregorianCalendar
zh-SG       1      1        -1     -1       System.Globalization.GregorianCalendar
zh-MO       1      1        -1     -1       System.Globalization.GregorianCalendar
cs-CZ       -1     -1       -1     -1       System.Globalization.GregorianCalendar
da-DK       1      1        -1     -1       System.Globalization.GregorianCalendar

*/
using System;
using System.Globalization;


public class SamplesGregorianCalendar  {

   public static void Main()  {

      // Creates strings with punctuation and without.
      String strADPunc = "A.D.";
      String strADNoPunc = "AD";
      String strCEPunc = "C.E.";
      String strCENoPunc = "CE";

      // Calls DTFI.GetEra for each culture that uses GregorianCalendar as the default calendar.
      Console.WriteLine( "            ----- AD -----  ----- CE -----" );
      Console.WriteLine( "CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR" );
      foreach ( CultureInfo myCI in CultureInfo.GetCultures( CultureTypes.SpecificCultures ) )  {
         Console.Write( "{0,-12}", myCI );
         Console.Write( "{0,-7}{1,-9}", myCI.DateTimeFormat.GetEra( strADPunc ), myCI.DateTimeFormat.GetEra( strADNoPunc ) );
         Console.Write( "{0,-7}{1,-9}", myCI.DateTimeFormat.GetEra( strCEPunc ), myCI.DateTimeFormat.GetEra( strCENoPunc ) );
         Console.Write( "{0}", myCI.Calendar );
         Console.WriteLine();
      }

   }

}

/*
This code produces the following output.  This output has been cropped for brevity.

            ----- AD -----  ----- CE -----
CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR
ar-SA       -1     -1       -1     -1       System.Globalization.HijriCalendar
ar-IQ       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-EG       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-LY       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-DZ       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-MA       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-TN       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-OM       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-YE       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-SY       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-JO       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-LB       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-KW       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-AE       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-BH       1      1        -1     -1       System.Globalization.GregorianCalendar
ar-QA       1      1        -1     -1       System.Globalization.GregorianCalendar
bg-BG       1      1        -1     -1       System.Globalization.GregorianCalendar
ca-ES       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-TW       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-CN       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-HK       -1     -1       -1     -1       System.Globalization.GregorianCalendar
zh-SG       1      1        -1     -1       System.Globalization.GregorianCalendar
zh-MO       1      1        -1     -1       System.Globalization.GregorianCalendar
cs-CZ       -1     -1       -1     -1       System.Globalization.GregorianCalendar
da-DK       1      1        -1     -1       System.Globalization.GregorianCalendar

*/
Imports System.Globalization

Public Class SamplesGregorianCalendar

   Public Shared Sub Main()

      ' Creates strings with punctuation and without.
      Dim strADPunc As [String] = "A.D."
      Dim strADNoPunc As [String] = "AD"
      Dim strCEPunc As [String] = "C.E."
      Dim strCENoPunc As [String] = "CE"

      ' Calls DTFI.GetEra for each culture that uses GregorianCalendar as the default calendar.
      Console.WriteLine("            ----- AD -----  ----- CE -----")
      Console.WriteLine("CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR")
      Dim myCI As CultureInfo
      For Each myCI In  CultureInfo.GetCultures(CultureTypes.SpecificCultures)
         Console.Write("{0,-12}", myCI)
         Console.Write("{0,-7}{1,-9}", myCI.DateTimeFormat.GetEra(strADPunc), myCI.DateTimeFormat.GetEra(strADNoPunc))
         Console.Write("{0,-7}{1,-9}", myCI.DateTimeFormat.GetEra(strCEPunc), myCI.DateTimeFormat.GetEra(strCENoPunc))
         Console.Write("{0}", myCI.Calendar)
         Console.WriteLine()
      Next myCI

   End Sub

End Class 'SamplesGregorianCalendar


'This code produces the following output.  This output has been cropped for brevity.
'
'            ----- AD -----  ----- CE -----
'CULTURE     PUNC   NO PUNC  PUNC   NO PUNC  CALENDAR
'ar-SA       -1     -1       -1     -1       System.Globalization.HijriCalendar
'ar-IQ       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-EG       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-LY       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-DZ       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-MA       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-TN       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-OM       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-YE       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-SY       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-JO       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-LB       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-KW       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-AE       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-BH       1      1        -1     -1       System.Globalization.GregorianCalendar
'ar-QA       1      1        -1     -1       System.Globalization.GregorianCalendar
'bg-BG       1      1        -1     -1       System.Globalization.GregorianCalendar
'ca-ES       -1     -1       -1     -1       System.Globalization.GregorianCalendar
'zh-TW       -1     -1       -1     -1       System.Globalization.GregorianCalendar
'zh-CN       -1     -1       -1     -1       System.Globalization.GregorianCalendar
'zh-HK       -1     -1       -1     -1       System.Globalization.GregorianCalendar
'zh-SG       1      1        -1     -1       System.Globalization.GregorianCalendar
'zh-MO       1      1        -1     -1       System.Globalization.GregorianCalendar
'cs-CZ       -1     -1       -1     -1       System.Globalization.GregorianCalendar
'da-DK       1      1        -1     -1       System.Globalization.GregorianCalendar

Commenti

Il nome dell'era è il nome usato da un calendario per fare riferimento a un periodo di tempo calcolato da un punto o un evento fisso.The era name is the name a calendar uses to refer to a period of time reckoned from a fixed point or event. Ad esempio, "A.D."For example, "A.D." o "E.V."or "C.E." è l'era corrente nel calendario gregoriano.is the current era in the Gregorian calendar.

Il confronto con eraName non fa distinzione tra maiuscole e minuscole, ad esempio, "A.D."The comparison with eraName is case-insensitive, for example, "A.D." equivale a "a.d.".is equivalent to "a.d.".

GetEraIgnora la punteggiatura nei nomi abbreviati dell' GregorianCalendar era, solo se è selezionato in DateTimeFormatInfo.Calendar e le impostazioni cultura usano "A.D.".GetEra ignores punctuation in abbreviated era names, only if the GregorianCalendar is selected in DateTimeFormatInfo.Calendar and the culture uses "A.D." come nome dell'era, ovvero "A.D."as the era name, that is, "A.D." equivale a "AD".is equivalent to "AD".

GetEraviene confrontato eraName con il nome dell'era GetEraName completo restituito da e con il nome abbreviato dell'era restituito da GetAbbreviatedEraName.GetEra compares eraName with the full era name returned by GetEraName and with the abbreviated era name returned by GetAbbreviatedEraName.

Importante

Le ere nel calendario giapponese sono basate sul regno dell'imperatore e pertanto è previsto che cambino.Eras in the Japanese calendars are based on the emperor's reign and are therefore expected to change. Ad esempio, il 1° maggio 2019 contraddistingue l'inizio dell'era Reiwa in JapaneseCalendar e JapaneseLunisolarCalendar.For example, May 1, 2019 marked the beginning of the Reiwa era in the JapaneseCalendar and JapaneseLunisolarCalendar. Questo cambio di era interessa tutte le applicazioni che usano questi calendari.Such a change of era affects all applications that use these calendars. Vedere Handling a new era in the Japanese calendar in .NET (Gestione di una nuova era nel calendario giapponese in .NET) per altre informazioni e per determinare se le proprie applicazioni sono interessate dal cambio.See Handling a new era in the Japanese calendar in .NET for more information and to determine whether your applications are affected. Vedere Prepare your application for the Japanese era change (Preparare l'applicazione per il cambio di era giapponese) per informazioni sul test delle applicazioni nei sistemi Windows per verificare che siano pronte per il cambio di era.See Prepare your application for the Japanese era change for information on testing your applications on Windows systems to ensure their readiness for the era change. Vedere Utilizzo delle ere per informazioni sulle funzionalità in .NET che supportano calendari con più ere e per le procedure consigliate per l'uso dei calendari che supportano più ere.See Working with eras for features in .NET that support calendars with multiple eras and for best practices when working with calendars that support multiple eras.

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