DateTimeFormatInfo.GetEra(String) 方法

參考

定義

命名空間:: System.Globalization

組件:: System.Globalization.dll

組件:: System.Runtime.dll

組件:: netstandard.dll

組件:: mscorlib.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

傳回代表指定紀元的整數。

public:
 int GetEra(System::String ^ eraName);

public int GetEra (string eraName);

member this.GetEra : string -> int

Public Function GetEra (eraName As String) As Integer

參數

eraName: String

含有紀元名稱的字串。

傳回

Int32

如果 eraName 有效，則為表示紀元的整數，否則為 -1。

例外狀況

ArgumentNullException

eraName 為 null。

範例

下列範例顯示， DateTimeFormatInfo 只有在行事曆為西曆且文化特性使用紀元名稱 "西元" 時，才會忽略紀元名稱中的標點符號。

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


'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

備註

紀元名稱是行事曆用來參考從固定點或事件全盛時期來勢洶洶的一段時間的名稱。例如，「西元」或「西元」是西曆中的目前紀元。

的比較 eraName 會區分大小寫，例如「西元」相當於「西元」。

GetEra 只有當 GregorianCalendar 在中選取， DateTimeFormatInfo.Calendar 且文化特性使用 "西元" 時，才會忽略縮寫紀元名稱中的標點符號。作為紀元名稱，也就是「西元」相當於 "AD"。

GetEra 與傳回的 eraName 完整紀元名稱和所 GetEraName 傳回的縮寫紀元名稱進行比較 GetAbbreviatedEraName 。

重要

日本曆法的紀元是以天皇的統治為基礎，因此有變更是正常的。例如，2019 年 5 月 1 日之後，JapaneseCalendar 與 JapaneseLunisolarCalendar 中將開始使用「令和」。此變更對使用這些日曆的所有應用程式都有影響。如需詳細資訊，以及判斷您的應用程式是否受到影響，請參閱在 .net 的日文日曆中處理新的紀元。如需在 Windows 系統上測試您的應用程式以確保其在年代的就緒狀態變更的相關資訊，請參閱準備您的應用程式以進行日本時代變更。針對支援多個紀元日曆的 .NET 功能，以及在使用支援多個紀元的行事歷時的最佳作法，請參閱使用紀元。

適用於

DateTimeFormatInfo.GetEra(String) 方法

定義

參數

傳回

例外狀況

範例

備註

適用於

另請參閱

其他資源