PersianCalendar クラスとは何？わかりやすく解説 Weblio辞書

すべての辞書から再検索する

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

PersianCalendar クラス

メモ : このクラスは、.NET Framework version 2.0 で新しく追加されたものです。

ペルシャ暦を表します。

名前空間: System.Globalization
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

<SerializableAttribute> _
Public Class PersianCalendar
    Inherits Calendar

Visual Basic (使用法)

Dim instance As PersianCalendar

[SerializableAttribute] 
public class PersianCalendar : Calendar

C++

[SerializableAttribute] 
public ref class PersianCalendar : public
 Calendar

/** @attribute SerializableAttribute() */ 
public class PersianCalendar extends Calendar

JScript

SerializableAttribute 
public class PersianCalendar extends
 Calendar

解説

地域によって月の名前に相違がある場合もありますが、ペルシャ暦は、ペルシャ語が話されるほとんどの国で使用されています。ペルシャ暦はイランとアフガニスタンにおける公式な暦であり、カザフスタンやタジキスタンなどの地域では代替暦の 1 つとして使用されています。

ペルシャ暦は、ヒジュラの年から日付が始まります。この年は、マホメットがメッカからメディナに移住した紀元 622 年に対応します。たとえば、紀元 2002 年 3 月 21 日は、A.P. (Anno Persico) 1381 年の Farvardeen という月の最初の日に相当します。

ペルシャ暦は、太陽年に基づいていて、1 年を約 365 日とします。1 年は 4 つの季節を持ち、新年は、地球の中心から見たときに太陽が南半球から北半球に赤道を横切るように見えるときから始まります。新年になると、Farvardeen の月の最初の日を迎えます。これは、北半球で春の最初の日となります。

ペルシャ暦では、最初の 6 つの月をそれぞれ 31 日とし、その次の 5 つの月をそれぞれ 30 日とします。最後の月は、平年で 29 日、閏年で 30 日とします。閏年とは、33 で割ったときの剰余が 1、5、9、13、17、22、26、または 30 となる年です。たとえば、1370 年は、33 で割ったときの剰余が 17 となるので閏年です。およそ 33 年周期で 8 つの閏年があります。

PersianCalendar の使用

PersianCalendar オブジェクトは、ペルシャ暦の日付を計算したり、ペルシャ暦とグレゴリオ暦間で日付を変換したりする場合に使用します。

PersianCalendar オブジェクトをカルチャの既定のカレンダーとして使うことは避けてください。既定のカレンダーは、CultureInfo.Calendar プロパティによって指定され、CultureInfo.OptionalCalendars プロパティによって返されるいずれかのカレンダーであることが必要です。現在、PersianCalendar クラスのカレンダーは CultureInfo クラスがサポートするカルチャでは一切選択できません。したがって、既定のカレンダーに使用することもできません。

使用例

PersianCalendar クラスのメンバであるフィールド、プロパティ、およびメソッドを使用するコード例を次に示します。

Visual Basic

' This example demonstrates the members of the PersianCalendar class.
Imports System
Imports System.Globalization

Class Sample
    Public Shared Sub Main()
 
        '--------------------------------------------------------------------------------
        ' Get today's date.
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "................. Today ..........................."
 & vbCrLf)
        Dim jc As New PersianCalendar()
        Dim thisDate As DateTime = DateTime.Now

        ' Use thisDate twice to display the name of the day and the
 current date. 
        Console.WriteLine("Today is {0:dddd}, {0}",
 thisDate)
        '--------------------------------------------------------------------------------
        ' Fields
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "............... Fields ............................"
 & vbCrLf)
        Console.WriteLine("PersianEra = {0}", PersianCalendar.PersianEra)
        '--------------------------------------------------------------------------------
        ' Properties
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "............... Properties ........................."
 & vbCrLf)
        Console.Write("Eras:")
        Dim era As Integer
        For Each era In
 jc.Eras
            Console.WriteLine(" era = {0}", era)
        Next era
        '--------------------------------------------------------------------------------
        Console.WriteLine("MaxSupportedDateTime = {0:G}",
 jc.MaxSupportedDateTime)
        '--------------------------------------------------------------------------------
        Console.WriteLine("MinSupportedDateTime = {0:G}",
 jc.MinSupportedDateTime)
        '--------------------------------------------------------------------------------
        Console.WriteLine("TwoDigitYearMax = {0}",
 jc.TwoDigitYearMax)
        '--------------------------------------------------------------------------------
        ' Methods
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "................ Methods ..........................."
 & vbCrLf)

        ' Create a date six months in the future and another date six
 months in the past. 

        Dim plus6Months As DateTime = jc.AddMonths(thisDate,
 6)
        Dim minus6Months As DateTime = jc.AddMonths(thisDate,
 -6)
        Console.WriteLine("AddMonths: thisDate + 6 months = {0}",
 plus6Months)
        Console.WriteLine("           thisDate - 6 months = {0}",
 minus6Months)
        '--------------------------------------------------------------------------------

        ' Create a date five years in the future and another date three
 years in the past.
 
        Dim plus5Years As DateTime = jc.AddYears(thisDate,
 5)
        Dim minus3Years As DateTime = jc.AddYears(thisDate,
 -3)
        Console.WriteLine("AddYears:  thisDate + 5 years = {0}",
 plus5Years)
        Console.WriteLine("           thisDate - 3 years = {0}",
 minus3Years)
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDayOfMonth: month = {0}",
 jc.GetDayOfMonth(thisDate))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDayOfWeek: day = {0}",
 jc.GetDayOfWeek(thisDate))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDayOfYear: day = {0}",
 jc.GetDayOfYear(thisDate))
        '--------------------------------------------------------------------------------

        Console.WriteLine("GetDaysInMonth: days = {0}",
 _
                           jc.GetDaysInMonth(thisDate.Year, _
                                             thisDate.Month, _
                                             PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDaysInYear: days = {0}",
 _
                          jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetEra: era = {0}", jc.GetEra(thisDate))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetLeapMonth: leap month (if any) =
 {0}", _
                           jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetMonth: month = {0}",
 jc.GetMonth(thisDate))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetMonthsInYear: months in a year =
 {0}", _
                           jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetYear: year = {0}", jc.GetYear(thisDate))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapDay: This is a leap day = {0}",
 _
                           jc.IsLeapDay(thisDate.Year, _
                                        thisDate.Month, thisDate.Day, _
                                        PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapMonth: This is a leap month =
 {0}", _
                           jc.IsLeapMonth(thisDate.Year, _
                                          thisDate.Month, _
                                          PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}",
 _
                           jc.IsLeapYear(1370, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------

        ' Create a date in the Gregorian calendar and the Persian calendar.
 The date is
        ' the current date and an arbitrary time of 20 hours, 30 minutes,
 and 15.5 
        ' seconds.

        Dim dt1 As New DateTime(thisDate.Year,
 thisDate.Month, thisDate.Day, _
                                20, 30, 15, 500)
        Dim dt2 As DateTime = jc.ToDateTime(thisDate.Year,
 thisDate.Month, _
                              thisDate.Day, _
                              20, 30, 15, 500, _
                              PersianCalendar.PersianEra)
        Console.WriteLine("ToDateTime:")
        Console.WriteLine("  Gregorian calendar: {0}",
 dt1)
        Console.WriteLine("  Persian calendar:   {0}",
 dt2)
        '--------------------------------------------------------------------------------

        ' Get the 4-digit year for a year whose last two digits are
 99. The 4-digit year 
        ' depends on the current value of the TwoDigitYearMax property.

        Console.WriteLine("ToFourDigitYear:")
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99)
 = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
        jc.TwoDigitYearMax = thisDate.Year
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99)
 = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
    End Sub 'Main
End Class 'Sample
'
'This code example produces the following results:
'
'................. Today ...........................
'
'Today is Friday, 8/20/2004 1:08:37 PM
'
'............... Fields .............................
'
'PersianEra = 1
'
'............... Properties .........................
'
'Eras: era = 1
'MaxSupportedDateTime = 12/31/9999 11:59:59 PM
'MinSupportedDateTime = 3/21/0622 12:00:00 AM
'TwoDigitYearMax = 1410
'
'................ Methods ...........................
'
'AddMonths: thisDate + 6 months = 2/18/2005 1:08:37 PM
'           thisDate - 6 months = 2/19/2004 1:08:37 PM
'AddYears:  thisDate + 5 years =  8/21/2009 1:08:37 PM
'           thisDate - 3 years =  8/21/2001 1:08:37 PM
'GetDayOfMonth: month = 30
'GetDayOfWeek: day = Friday
'GetDayOfYear: day = 154
'GetDaysInMonth: days = 30
'GetDaysInYear: days = 365
'GetEra: era = 1
'GetLeapMonth: leap month (if any) = 0
'GetMonth: month = 5
'GetMonthsInYear: months in a year = 12
'GetYear: year = 1383
'IsLeapDay: This is a leap day = False
'IsLeapMonth: This is a leap month = False
'IsLeapYear: 1370 is a leap year = True
'ToDateTime:
'  Gregorian calendar: 8/20/2004 8:30:15 PM
'  Persian calendar:   11/11/2625 8:30:15 PM
'ToFourDigitYear:
'  If TwoDigitYearMax = 1410, ToFourDigitYear(99) = 1399
'  If TwoDigitYearMax = 2004, ToFourDigitYear(99) = 1999
'

// This example demonstrates the members of the PersianCalendar class.

using System;
using System.Globalization;

class Sample 
{
    public static void Main()
 
    {
//--------------------------------------------------------------------------------
// Get today's date.
//--------------------------------------------------------------------------------
    Console.WriteLine("\n................. Today ...........................\n");
    PersianCalendar jc = new PersianCalendar();
    DateTime thisDate = DateTime.Now;

// Use thisDate twice to display the name of the day and the current
 date.
    Console.WriteLine("Today is {0:dddd}, {0}", thisDate);
//--------------------------------------------------------------------------------
// Fields
//--------------------------------------------------------------------------------
    Console.WriteLine("\n............... Fields .............................\n");
    Console.WriteLine("PersianEra = {0}", PersianCalendar.PersianEra);
//--------------------------------------------------------------------------------
// Properties
//--------------------------------------------------------------------------------
    Console.WriteLine("\n............... Properties .........................\n");
    Console.Write("Eras:");
    foreach (int era in
 jc.Eras)
        {
        Console.WriteLine(" era = {0}", era);
        }
//--------------------------------------------------------------------------------
    Console.WriteLine("MaxSupportedDateTime = {0:G}", jc.MaxSupportedDateTime);
//--------------------------------------------------------------------------------
    Console.WriteLine("MinSupportedDateTime = {0:G}", jc.MinSupportedDateTime);
//--------------------------------------------------------------------------------
    Console.WriteLine("TwoDigitYearMax = {0}", jc.TwoDigitYearMax);
//--------------------------------------------------------------------------------
// Methods
//--------------------------------------------------------------------------------
    Console.WriteLine("\n................ Methods ...........................\n");

// Create a date six months in the future and another date six months
 in the past.

    Console.WriteLine("AddMonths: thisDate + 6 months = {0}\n" + 
                      "           thisDate - 6 months = {1}",
                       jc.AddMonths(thisDate, 6), jc.AddMonths(thisDate, -6));
//--------------------------------------------------------------------------------

// Create a date five years in the future and another date three years
 in the past.

    Console.WriteLine("AddYears:  thisDate + 5 years =  {0}\n" + 
                      "           thisDate - 3 years =  {1}",
                       jc.AddYears(thisDate, 5), jc.AddYears(thisDate, -3));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetDayOfMonth: month = {0}", jc.GetDayOfMonth(thisDate));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetDayOfWeek: day = {0}", jc.GetDayOfWeek(thisDate));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetDaysInMonth: days = {0}", 
                      jc.GetDaysInMonth( thisDate.Year, thisDate.Month, 
                      PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetDaysInYear: days = {0}", 
                       jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetEra: era = {0}", jc.GetEra(thisDate));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetLeapMonth: leap month (if any)
 = {0}", 
                       jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetMonth: month = {0}", jc.GetMonth(thisDate));
//-------------------------------------------------------------
    Console.WriteLine("GetMonthsInYear: months in a year
 = {0}", 
                       jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("GetYear: year = {0}", jc.GetYear(thisDate));
//--------------------------------------------------------------------------------
    Console.WriteLine("IsLeapDay: This is a leap day = {0}", 
                       jc.IsLeapDay(thisDate.Year, thisDate.Month, thisDate.Day,
 
                       PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("IsLeapMonth: This is a leap month = {0}", 
                       jc.IsLeapMonth(thisDate.Year, thisDate.Month, 
                       PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}", 
                       jc.IsLeapYear(1370, PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
    DateTime dt1 = new DateTime(thisDate.Year, thisDate.Month,
 thisDate.Day, 20, 30, 15, 500);
    DateTime dt2 = jc.ToDateTime(thisDate.Year, thisDate.Month, thisDate.Day, 20,
 30, 15, 500, 
                                 PersianCalendar.PersianEra);
    Console.WriteLine("ToDateTime:");
    Console.WriteLine("  Gregorian calendar: {0}\n" +
                      "  Persian calendar:   {1}", dt1, dt2);
//--------------------------------------------------------------------------------

// Get the 4-digit year for a year whose last two digits are 99. The
 4-digit year 
// depends on the current value of the TwoDigitYearMax property.

    Console.WriteLine("ToFourDigitYear:");
    Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}",
 
                       jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
    jc.TwoDigitYearMax = thisDate.Year;
    Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}",
 
                       jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
    }
}
/*
This code example produces the following results:

................. Today ...........................

Today is Friday, 8/20/2004 1:08:37 PM

............... Fields .............................

PersianEra = 1

............... Properties .........................

Eras: era = 1
MaxSupportedDateTime = 12/31/9999 11:59:59 PM
MinSupportedDateTime = 3/21/0622 12:00:00 AM
TwoDigitYearMax = 1410

................ Methods ...........................

AddMonths: thisDate + 6 months = 2/18/2005 1:08:37 PM
           thisDate - 6 months = 2/19/2004 1:08:37 PM
AddYears:  thisDate + 5 years =  8/21/2009 1:08:37 PM
           thisDate - 3 years =  8/21/2001 1:08:37 PM
GetDayOfMonth: month = 30
GetDayOfWeek: day = Friday
GetDayOfYear: day = 154
GetDaysInMonth: days = 30
GetDaysInYear: days = 365
GetEra: era = 1
GetLeapMonth: leap month (if any) = 0
GetMonth: month = 5
GetMonthsInYear: months in a year = 12
GetYear: year = 1383
IsLeapDay: This is a leap day = False
IsLeapMonth: This is a leap month = False
IsLeapYear: 1370 is a leap year = True
ToDateTime:
  Gregorian calendar: 8/20/2004 8:30:15 PM
  Persian calendar:   11/11/2625 8:30:15 PM
ToFourDigitYear:
  If TwoDigitYearMax = 1410, ToFourDigitYear(99) = 1399
  If TwoDigitYearMax = 2004, ToFourDigitYear(99) = 1999

*/

継承階層

System.Object
System.Globalization.Calendar
System.Globalization.PersianCalendar

スレッドセーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッドセーフです。インスタンスメンバの場合は、スレッドセーフであるとは限りません。

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
PersianCalendar メンバ
System.Globalization 名前空間
Calendar クラス
CultureInfo.Calendar プロパティ
CultureInfo.OptionalCalendars プロパティ

このページでは「.NET Framework クラスライブラリリファレンス」からPersianCalendar クラスを検索した結果を表示しています。
Weblioに収録されているすべての辞書からPersianCalendar クラスを検索する場合は、下記のリンクをクリックしてください。

全ての辞書からPersianCalendar クラスを検索

>> 「PersianCalendar クラス」を含む用語の索引
PersianCalendar クラスのページへのリンク

PersianCalendar クラスとは？わかりやすく解説

PersianCalendar クラス

「PersianCalendar クラス」の関連用語


	© 2025 Microsoft.All rights reserved.

PersianCalendar クラスとは？ わかりやすく解説

PersianCalendar クラス

急上昇のことば

「PersianCalendar クラス」の関連用語

PersianCalendar クラスとは？わかりやすく解説