JapaneseCalendar.Eras Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the list of eras in the JapaneseCalendar.
public:
virtual property cli::array <int> ^ Eras { cli::array <int> ^ get(); };public override int[] Eras { get; }member this.Eras : int[]Public Overrides ReadOnly Property Eras As Integer()Property Value
An array of integers that represents the eras in the JapaneseCalendar.
Examples
The following example displays the values contained in the Eras property.
using namespace System;
using namespace System::Globalization;
int main()
{
// Creates and initializes a JapaneseCalendar.
JapaneseCalendar^ myCal = gcnew JapaneseCalendar;
// Displays the values in the Eras property.
for ( int i = 0; i < myCal->Eras->Length; i++ )
{
Console::WriteLine( "Eras[ {0}] = {1}", i, myCal->Eras[ i ] );
}
}
/*
This code produces the following output.
Eras->Item[0] = 4
Eras->Item[1] = 3
Eras->Item[2] = 2
Eras->Item[3] = 1
*/
using System;
using System.Globalization;
public class SamplesJapaneseCalendar {
public static void Main() {
// Creates and initializes a JapaneseCalendar.
JapaneseCalendar myCal = new JapaneseCalendar();
// Displays the values in the Eras property.
for ( int i = 0; i < myCal.Eras.Length; i++ ) {
Console.WriteLine( "Eras[{0}] = {1}", i, myCal.Eras[i] );
}
}
}
/*
This code produces the following output.
Eras[0] = 4
Eras[1] = 3
Eras[2] = 2
Eras[3] = 1
*/
Imports System.Globalization
Public Class SamplesJapaneseCalendar
Public Shared Sub Main()
' Creates and initializes a JapaneseCalendar.
Dim myCal As New JapaneseCalendar()
' Displays the values in the Eras property.
Dim i As Integer
For i = 0 To myCal.Eras.Length - 1
Console.WriteLine("Eras[{0}] = {1}", i, myCal.Eras(i))
Next i
End Sub
End Class
'This code produces the following output.
'
'Eras[0] = 4
'Eras[1] = 3
'Eras[2] = 2
'Eras[3] = 1
'
Remarks
The Japanese calendar recognizes one era for every emperor's reign. The two most recent eras are the Heisei era, beginning in the Gregorian calendar year 1989, and the Reiwa era, beginning in the Gregorian calendar year 2019. The era name is typically displayed before the year. For example, the Gregorian calendar year 2001 is the Japanese calendar year Heisei 13. Note that the first year of an era is called "Gannen." Therefore, the Gregorian calendar year 1989 was the Japanese calendar year Heisei Gannen.
Important
Eras in the Japanese calendars are based on the emperor's reign and are therefore expected to change. For example, May 1, 2019 marked the beginning of the Reiwa era in the JapaneseCalendar and JapaneseLunisolarCalendar. Such a change of era affects all applications that use these calendars. For more information and to determine whether your applications are affected, see Handling a new era in the Japanese calendar in .NET. For information on testing your applications on Windows systems to ensure their readiness for the era change, see Prepare your application for the Japanese era change. For features in .NET that support calendars with multiple eras and for best practices when working with calendars that support multiple eras, see Working with eras.
This class assigns numbers to the eras as follows:
| GetEra value | Era Name | Era Abbreviation | Gregorian Dates |
|---|---|---|---|
| 5 | 令和 (Reiwa) | 令和 (R, r) | May 1, 2019 to present |
| 4 | 平成 (Heisei) | 平 (H, h) | January 8, 1989 to present |
| 3 | 昭和 (Showa) | 昭 (S, s) | December 25, 1926 to January 7, 1989 |
| 2 | 大正 (Taisho) | 大 (T, t) | July 30, 1912 to December 24, 1926 |
| 1 | 明治 (Meiji) | 明 (M, m) | September 8, 1868 to July 29, 1912 |
This class handles dates from September 8 in the year Meiji 1 (January 1, 1868 of the Gregorian calendar). Although the Japanese calendar was switched from a lunar calendar to a solar calendar in the year Meiji 6 (1873 of the Gregorian calendar), this implementation is based on the solar calendar only.
Note
Should additional eras be added in the future, applications may encounter more than the expected five eras for the Japanese calendar. Your applications should be tested to ensure that they continue to work in such an event; see Era Handling for the Japanese Calendar.
