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DateTimeFormatInfo.GetEra Method

Returns the integer representing the specified era.

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)

public int GetEra(
	string eraName
)

Parameters

eraName
Type: System.String
The string containing the name of the era.

Return Value

Type: System.Int32
The integer representing the era, if eraName is valid; otherwise, -1.

ExceptionCondition
ArgumentNullException

eraName is null.

The era name is the name a calendar uses to refer to a period of time reckoned from a fixed point or event. For example, "A.D." or "C.E." is the current era in the Gregorian calendar.

The comparison with eraName is case-insensitive, for example, "A.D." is equivalent to "a.d.".

GetEra ignores punctuation in abbreviated era names, only if the GregorianCalendar is selected in DateTimeFormatInfo.Calendar and the culture uses "A.D." as the era name, that is, "A.D." is equivalent to "AD".

GetEra compares eraName with the full era name returned by GetEraName and with the abbreviated era name returned by GetAbbreviatedEraName.

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 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

*/


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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