GregorianCalendar.GetDayOfWeek メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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GregorianCalendar.GetDayOfWeek メソッド

指定した DateTime の曜日を返します。

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

Visual Basic (宣言)

Public Overrides Function
 GetDayOfWeek ( _
    time As DateTime _
) As DayOfWeek

Visual Basic (使用法)

Dim instance As GregorianCalendar
Dim time As DateTime
Dim returnValue As DayOfWeek

returnValue = instance.GetDayOfWeek(time)

public override DayOfWeek GetDayOfWeek (
    DateTime time
)

C++

public:
virtual DayOfWeek GetDayOfWeek (
    DateTime time
) override

public DayOfWeek GetDayOfWeek (
    DateTime time
)

JScript

public override function GetDayOfWeek (
    time : DateTime
) : DayOfWeek

パラメータ

time: 読み取る対象の DateTime。

戻り値
time の曜日を表す DayOfWeek 値。

解説

DayOfWeek 値は、Sunday、Monday、Tuesday、Wednesday、Thursday、Friday、および Saturday です。

使用例

DateTime のいくつかのコンポーネントの値をグレゴリオ暦で表示する例を次に示します。

Visual Basic

Imports System
Imports System.Globalization


Public Class SamplesGregorianCalendar   

   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 GregorianCalendar.
      Dim myCal As New GregorianCalendar()

      ' Displays the values of the DateTime.
      Console.WriteLine("April 3, 2002 of the Gregorian 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 'SamplesGregorianCalendar
 


'This code produces the following output.

'

'April 3, 2002 of the Gregorian calendar:

'   Era:        1

'   Year:       2002

'   Month:      4

'   DayOfYear:  93

'   DayOfMonth: 3

'   DayOfWeek:  Wednesday

'

'After adding two years and ten months:

'   Era:        1

'   Year:       2005

'   Month:      2

'   DayOfYear:  34

'   DayOfMonth: 3

'   DayOfWeek:  Thursday

using System;
using System.Globalization;


public class SamplesGregorianCalendar  {

   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 GregorianCalendar.
      GregorianCalendar myCal = new GregorianCalendar();

      // Displays the values of the DateTime.
      Console.WriteLine( "April 3, 2002 of the Gregorian 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:
   Era:        1
   Year:       2002
   Month:      4
   DayOfYear:  93
   DayOfMonth: 3
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:        1
   Year:       2005
   Month:      2
   DayOfYear:  34
   DayOfMonth: 3
   DayOfWeek:  Thursday

*/

C++

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 GregorianCalendar.
   GregorianCalendar^ myCal = gcnew GregorianCalendar;
   
   // Displays the values of the DateTime.
   Console::WriteLine( "April 3, 2002 of the Gregorian 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:
   Era:        1
   Year:       2002
   Month:      4
   DayOfYear:  93
   DayOfMonth: 3
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:        1
   Year:       2005
   Month:      2
   DayOfYear:  34
   DayOfMonth: 3
   DayOfWeek:  Thursday

*/

import System.* ;
import System.Globalization.* ;

public class SamplesGregorianCalendar
{
    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 GregorianCalendar.
        GregorianCalendar myCal =  new GregorianCalendar();

        // Displays the values of the DateTime.
        Console.WriteLine("April 3, 2002 of the Gregorian 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}", myCal.GetDayOfWeek(myDT));
        Console.WriteLine();
    } //DisplayValues
} //SamplesGregorianCalendar

/*
This code produces the following output.

April 3, 2002 of the Gregorian calendar:
   Era:           1
   Year:       2002
   Month:      4
   DayOfYear:  93
   DayOfMonth: 3
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:           1
   Year:       2005
   Month:      2
   DayOfYear:  34
   DayOfMonth: 3
   DayOfWeek:  Thursday
*/

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
GregorianCalendar クラス
GregorianCalendar メンバ
System.Globalization 名前空間
DateTime.DayOfWeek
System.DayOfWeek
GetEra
GetYear
GetMonth
GetDayOfYear
GetDayOfMonth
Calendar.GetWeekOfYear

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GregorianCalendar.GetDayOfWeek メソッドとは？ わかりやすく解説

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GregorianCalendar.GetDayOfWeek メソッドとは？わかりやすく解説