JapaneseCalendar.GetEra メソッド
アセンブリ: mscorlib (mscorlib.dll 内)
構文
Dim instance As JapaneseCalendar Dim time As DateTime Dim returnValue As Integer returnValue = instance.GetEra(time)
戻り値
指定した DateTime の時代 (年号) を表す整数。
和暦では、天皇の在位期間ごとに 1 つの元号が認識されます。現在の時代 (年号) は、グレゴリオ暦の 1989 年から始まる平成です。通常、時代 (年号) 名は年の前に表示されます。たとえば、グレゴリオ暦の 2001 年は、和暦では平成 13 年です。ある元号の最初の年を "元年" と呼ぶため、グレゴリオ暦の 1989 年は、和暦では平成元年となります。
このクラスは、次のように時代 (年号) に番号を割り当てます。
GetEra 値 | |||
---|---|---|---|
4 | 平成 (Heisei) | 平 (H, h) | |
3 | 昭 (S, s) | ||
2 | 大 (T, t) | ||
1 | 明 (M, m) |
このクラスは、明治 1 年の 9 番目の月の 8 番目の日 (グレゴリオ暦で 1868 年の 9 月 8 日) 以降の日付だけを処理します。和暦は明治 6 年 (グレゴリオ暦の 1873 年) に太陰暦から太陽暦に切り替えられましたが、この実装は太陽暦だけに基づいています。
DateTime のいくつかのコンポーネントの値を和暦で表示する例を次に示します。
Imports System Imports System.Globalization Public Class SamplesJapaneseCalendar Public Shared Sub Main() ' Sets a DateTime to April 3, 2002 of the Gregorian calendar. Dim myDT As New DateTime(2002, 4, 3, New GregorianCalendar()) ' Creates an instance of the JapaneseCalendar. Dim myCal As New JapaneseCalendar() ' Displays the values of the DateTime. Console.WriteLine("April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:") DisplayValues(myCal, myDT) ' Adds two years and ten months. myDT = myCal.AddYears(myDT, 2) myDT = myCal.AddMonths(myDT, 10) ' Displays the values of the DateTime. Console.WriteLine("After adding two years and ten months:") DisplayValues(myCal, myDT) End Sub 'Main Public Shared Sub DisplayValues(myCal As Calendar, myDT As DateTime) Console.WriteLine(" Era: {0}", myCal.GetEra(myDT)) Console.WriteLine(" Year: {0}", myCal.GetYear(myDT)) Console.WriteLine(" Month: {0}", myCal.GetMonth(myDT)) Console.WriteLine(" DayOfYear: {0}", myCal.GetDayOfYear(myDT)) Console.WriteLine(" DayOfMonth: {0}", myCal.GetDayOfMonth(myDT)) Console.WriteLine(" DayOfWeek: {0}", myCal.GetDayOfWeek(myDT)) Console.WriteLine() End Sub 'DisplayValues End Class 'SamplesJapaneseCalendar 'This code produces the following output. ' 'April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: ' Era: 4 ' Year: 14 ' Month: 4 ' DayOfYear: 93 ' DayOfMonth: 3 ' DayOfWeek: Wednesday ' 'After adding two years and ten months: ' Era: 4 ' Year: 17 ' Month: 2 ' DayOfYear: 34 ' DayOfMonth: 3 ' DayOfWeek: Thursday
using System; using System.Globalization; public class SamplesJapaneseCalendar { public static void Main() { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = new DateTime( 2002, 4, 3, new GregorianCalendar() ); // Creates an instance of the JapaneseCalendar. JapaneseCalendar myCal = new JapaneseCalendar(); // Displays the values of the DateTime. Console.WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:" ); DisplayValues( myCal, myDT ); // Adds two years and ten months. myDT = myCal.AddYears( myDT, 2 ); myDT = myCal.AddMonths( myDT, 10 ); // Displays the values of the DateTime. Console.WriteLine( "After adding two years and ten months:" ); DisplayValues( myCal, myDT ); } public static void DisplayValues( Calendar myCal, DateTime myDT ) { Console.WriteLine( " Era: {0}", myCal.GetEra( myDT ) ); Console.WriteLine( " Year: {0}", myCal.GetYear( myDT ) ); Console.WriteLine( " Month: {0}", myCal.GetMonth( myDT ) ); Console.WriteLine( " DayOfYear: {0}", myCal.GetDayOfYear( myDT ) ); Console.WriteLine( " DayOfMonth: {0}", myCal.GetDayOfMonth( myDT ) ); Console.WriteLine( " DayOfWeek: {0}", myCal.GetDayOfWeek( myDT ) ); Console.WriteLine(); } } /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
using namespace System; using namespace System::Globalization; void DisplayValues( Calendar^ myCal, DateTime myDT ) { Console::WriteLine( " Era: {0}", myCal->GetEra( myDT ) ); Console::WriteLine( " Year: {0}", myCal->GetYear( myDT ) ); Console::WriteLine( " Month: {0}", myCal->GetMonth( myDT ) ); Console::WriteLine( " DayOfYear: {0}", myCal->GetDayOfYear( myDT ) ); Console::WriteLine( " DayOfMonth: {0}", myCal->GetDayOfMonth( myDT ) ); Console::WriteLine( " DayOfWeek: {0}", myCal->GetDayOfWeek( myDT ) ); Console::WriteLine(); } int main() { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = DateTime(2002,4,3,gcnew GregorianCalendar); // Creates an instance of the JapaneseCalendar. JapaneseCalendar^ myCal = gcnew JapaneseCalendar; // Displays the values of the DateTime. Console::WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:" ); DisplayValues( myCal, myDT ); // Adds two years and ten months. myDT = myCal->AddYears( myDT, 2 ); myDT = myCal->AddMonths( myDT, 10 ); // Displays the values of the DateTime. Console::WriteLine( "After adding two years and ten months:" ); DisplayValues( myCal, myDT ); } /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
import System.*; import System.Globalization.*; public class SamplesJapaneseCalendar { public static void main(String[] args) { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = new DateTime(2002, 4, 3, new GregorianCalendar()); // Creates an instance of the JapaneseCalendar. JapaneseCalendar myCal = new JapaneseCalendar(); // Displays the values of the DateTime. Console.WriteLine("April 3, 2002 of the Gregorian calendar equals" + " the following in the Japanese calendar:"); DisplayValues(myCal, myDT); // Adds two years and ten months. myDT = myCal.AddYears(myDT, 2); myDT = myCal.AddMonths(myDT, 10); // Displays the values of the DateTime. Console.WriteLine("After adding two years and ten months:"); DisplayValues(myCal, myDT); } //main public static void DisplayValues(Calendar myCal, DateTime myDT) { Console.WriteLine(" Era: {0}", System.Convert.ToString(myCal.GetEra(myDT))); Console.WriteLine(" Year: {0}", System.Convert.ToString(myCal.GetYear(myDT))); Console.WriteLine(" Month: {0}", System.Convert.ToString(myCal.GetMonth(myDT))); Console.WriteLine(" DayOfYear: {0}", System.Convert.ToString(myCal.GetDayOfYear(myDT))); Console.WriteLine(" DayOfMonth: {0}", System.Convert.ToString(myCal.GetDayOfMonth(myDT))); Console.WriteLine(" DayOfWeek: {0}", System.Convert.ToString(myCal.GetDayOfWeek(myDT))); Console.WriteLine(); } //DisplayValues } //SamplesJapaneseCalendar /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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参照
JapaneseCalendar クラス
JapaneseCalendar メンバ
System.Globalization 名前空間
System.DateTime
CurrentEra
Eras
GetYear
GetMonth
GetDayOfYear
GetDayOfMonth
GetDayOfWeek
Calendar.GetWeekOfYear
Calendar.GetHour
Calendar.GetMinute
Calendar.GetSecond
Calendar.GetMilliseconds
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