DateTime.DayOfWeek プロパティ

.NET Framework クラス ライブラリ リファレンス

DateTime.DayOfWeek プロパティ

このインスタンスで表される曜日を取得します。

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

Visual Basic (宣言)

Public ReadOnly Property
 DayOfWeek As DayOfWeek

Visual Basic (使用法)

Dim instance As DateTime
Dim value As DayOfWeek

value = instance.DayOfWeek

C#

public DayOfWeek DayOfWeek { get; }

C++

public:
property DayOfWeek DayOfWeek {
    DayOfWeek get ();
}

J#

/** @property */
public DayOfWeek get_DayOfWeek ()

JScript

public function get DayOfWeek
 () : DayOfWeek

プロパティ値
曜日を示す DayOfWeek 列挙定数。このプロパティ値の範囲は、日曜日を示す 0 から土曜日を示す 6 までです。

使用例

DayOfWeek プロパティおよび System.DayOfWeek 列挙体を使ったコード例を次に示します。

Visual Basic

' This example demonstrates the DateTime.DayOfWeek property
Imports System

Class Sample
   Public Shared Sub Main()
      ' Assume the current culture is en-US.
      ' Create a DateTime for the first of May, 2003.
      Dim dt As New DateTime(2003,
 5, 1)
      Console.WriteLine("Is Thursday the day of the week for {0:d}?:
 {1}", _
                         dt, dt.DayOfWeek = DayOfWeek.Thursday)
      Console.WriteLine("The day of the week for {0:d} is {1}.",
 dt, dt.DayOfWeek)
   End Sub 'Main
End Class 'Sample
'
'This example produces the following results:
'
'Is Thursday the day of the week for 5/1/2003?: True
'The day of the week for 5/1/2003 is Thursday.
'

C#

// This example demonstrates the DateTime.DayOfWeek property
using System;

class Sample 
{
    public static void Main()
 
    {
// Assume the current culture is en-US.
// Create a DateTime for the first of May, 2003.
    DateTime dt = new DateTime(2003, 5, 1);
    Console.WriteLine("Is Thursday the day of the week for
 {0:d}?: {1}", 
                       dt, dt.DayOfWeek == DayOfWeek.Thursday);
    Console.WriteLine("The day of the week for {0:d} is {1}.",
 dt, dt.DayOfWeek);
    }
}
/*
This example produces the following results:

Is Thursday the day of the week for 5/1/2003?: True
The day of the week for 5/1/2003 is Thursday.
*/

C++

// This example demonstrates the DateTime.DayOfWeek property
using namespace System;
int main()
{
   
   // Assume the current culture is en-US.
   // Create a DateTime for the first of May, 2003.
   DateTime dt = DateTime(2003,5,1);
   Console::WriteLine(  "Is Thursday the day of the week for
 {0:d}?: {1}", dt, dt.DayOfWeek == DayOfWeek::Thursday );
   Console::WriteLine(  "The day of the week for {0:d} is
 {1}.", dt, dt.DayOfWeek );
}

/*
This example produces the following results:

Is Thursday the day of the week for 5/1/2003?: True
The day of the week for 5/1/2003 is Thursday.
*/

J#

// This example demonstrates the DateTime.DayOfWeek property
import System.*;

class Sample
{
    public static void main(String[]
 args)
    {
        // Assume the current culture is en-US.
        // Create a DateTime for the first of May, 2003.
        DateTime dt = new DateTime(2003, 5, 1);
        Console.WriteLine("Is Thursday the day of the week for
 {0:d}?: {1}", 
            dt, (System.Boolean)(dt.get_DayOfWeek() == DayOfWeek.Thursday));
        Console.WriteLine("The day of the week for {0:d}
 is {1}.", dt, 
            dt.get_DayOfWeek());
    } //main
} //Sample
/*
This example produces the following results:

Is Thursday the day of the week for 5/1/2003?: True
The day of the week for 5/1/2003 is 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
DateTime 構造体
DateTime メンバ
System 名前空間
Ticks
Int32