DateTime.Day DateTime.Day DateTime.Day DateTime.Day Property

定義

このインスタンスで表される月の日付を取得します。Gets the day of the month represented by this instance.

public:
 property int Day { int get(); };
public int Day { get; }
member this.Day : int
Public ReadOnly Property Day As Integer

プロパティ値

DateTime の日付部分 (1 ~ 31)。The day component, expressed as a value between 1 and 31.

次の例で、Dayプロパティ。The following example demonstrates the Day property.

System::DateTime moment = System::DateTime(
   1999, 1, 13, 3, 57, 32, 11 );

// Year gets 1999.
int year = moment.Year;

// Month gets 1 (January).
int month = moment.Month;

// Day gets 13.
int day = moment.Day;

// Hour gets 3.
int hour = moment.Hour;

// Minute gets 57.
int minute = moment.Minute;

// Second gets 32.
int second = moment.Second;

// Millisecond gets 11.
int millisecond = moment.Millisecond;

System.DateTime moment = new System.DateTime(
								1999, 1, 13, 3, 57, 32, 11);
// Year gets 1999.
int year = moment.Year;

// Month gets 1 (January).
int month = moment.Month;

// Day gets 13.
int day = moment.Day;

// Hour gets 3.
int hour = moment.Hour;

// Minute gets 57.
int minute = moment.Minute;

// Second gets 32.
int second = moment.Second;

// Millisecond gets 11.
int millisecond = moment.Millisecond;
Dim moment As New System.DateTime(1999, 1, 13, 3, 57, 32, 11)

' Year gets 1999.
Dim year As Integer = moment.Year

' Month gets 1 (January).
Dim month As Integer = moment.Month

' Day gets 13.
Dim day As Integer = moment.Day

' Hour gets 3.
Dim hour As Integer = moment.Hour

' Minute gets 57.
Dim minute As Integer = moment.Minute

' Second gets 32.
Dim second As Integer = moment.Second

' Millisecond gets 11.
Dim millisecond As Integer = moment.Millisecond

注釈

Dayプロパティは常にグレゴリオ暦のカレンダーで月の日を返す場合でも、現在DateTime値が他のカレンダーを使用してインスタンス化されたまたは現在のスレッドのカルチャの既定の暦の場合は、グレゴリオ暦ではありません。The Day property always returns the day of the month in the Gregorian calendar, even if the current DateTime value was instantiated using some other calendar or if the current thread culture's default calendar is not the Gregorian calendar. 他のカレンダーを使用して、特定の日付の月の日を取得する呼び出しの暦のCalendar.GetDayOfMonthメソッド。To retrieve the day of the month of a particular date using some other calendar, call that calendar's Calendar.GetDayOfMonth method. 次の例では、両方は使用して、DayプロパティおよびHijriCalendar.GetDayOfMonthの月の日を取得するメソッドをDateTimeイスラム暦カレンダーを使用してインスタンス化される値。The following example uses both the Day property and the HijriCalendar.GetDayOfMonth method to retrieve the day of the month for a DateTime value that is instantiated using the Hijri calendar.

// Return day of 1/13/2009.
DateTime dateGregorian = new DateTime(2009, 1, 13);
Console.WriteLine(dateGregorian.Day);              
// Displays 13 (Gregorian day).

// Create date of 1/13/2009 using Hijri calendar.
HijriCalendar hijri = new HijriCalendar();
DateTime dateHijri = new DateTime(1430, 1, 17, hijri);
// Return day of date created using Hijri calendar.
Console.WriteLine(dateHijri.Day);                    
// Displays 13 (Gregorian day).

// Display day of date in Hijri calendar.
Console.WriteLine(hijri.GetDayOfMonth(dateHijri));   
// Displays 17 (Hijri day).
' Return day of 1/13/2009.
Dim dateGregorian As Date = #1/13/2009#
Console.WriteLine(dateGregorian.Day)
' Displays 13 (Gregorian date).

' Create date of 1/13/2009 using Hijri calendar.
Dim hijri As New HijriCalendar()
Dim dateHijri As Date = New Date(1430, 1, 17, hijri)
' Return day of date created using Hijri calendar.
Console.WriteLine(dateHijri.Day)                   
' Displays 13 (Gregorian date).

' Display day of date in Hijri calendar.
Console.WriteLine(hijri.GetDayOfMonth(dateHijri))  
' Displays 17 (Hijri date).

同様に、次の例では両方とも、DayプロパティおよびHijriCalendar.GetDayOfMonthAR-SA は、その既定の暦としてイスラム暦を使用するが、現在のスレッド カルチャの場合、その月の日を取得します。Similarly, the following example uses both the Day property and the HijriCalendar.GetDayOfMonth method to retrieve the day of the month when the current thread culture is ar-SA, which uses Hijri as its default calendar.

CultureInfo originalCulture = Thread.CurrentThread.CurrentCulture;

// Change current culture to ar-SA.
CultureInfo ci = new CultureInfo("ar-SA");
Thread.CurrentThread.CurrentCulture = ci;

DateTime hijriDate = new DateTime(1430, 1, 17, 
                         Thread.CurrentThread.CurrentCulture.Calendar);
// Display date (uses calendar of current culture by default).
Console.WriteLine(hijriDate.ToString("dd-MM-yyyy"));
// Displays 17-01-1430.

// Display day of 17th of Muharram
Console.WriteLine(hijriDate.Day);
// Displays 13 (corresponding day of January in Gregorian calendar).

// Display day of 17th of Muharram in Hijri calendar.
Console.WriteLine(Thread.CurrentThread.CurrentCulture.Calendar.GetDayOfMonth(hijriDate));
// Displays 17.

Thread.CurrentThread.CurrentCulture = originalCulture;  
Dim originalCulture As CultureInfo = Thread.CurrentThread.CurrentCulture

' Change current culture to ar-SA.
Dim ci As New CultureInfo("ar-SA")
Thread.CurrentThread.CurrentCulture = ci

Dim hijriDate As New Date(1430, 1, 17, _
                          Thread.CurrentThread.CurrentCulture.Calendar)
' Display date (uses calendar of current culture by default).
Console.WriteLine(hijriDate.ToString("dd-MM-yyyy"))
' Displays 17-01-1430.

' Display day of 17th of Muharram
Console.WriteLine(hijriDate.Day)
' Displays 13 (corresponding day of January in Gregorian calendar).

' Display day of 17th of Muharram in Hijri calendar.
Console.WriteLine(Thread.CurrentThread.CurrentCulture.Calendar.GetDayOfMonth(hijriDate))
' Displays 17.

Thread.CurrentThread.CurrentCulture = originalCulture  

適用対象