DateTimeOffset.DayOfWeek Свойство

Определение

Возвращает день недели, представленный текущим объектом DateTimeOffset.Gets the day of the week represented by the current DateTimeOffset object.

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

Значение свойства

DayOfWeek

Одно из значений перечисления, определяющее день недели текущего объекта DateTimeOffset.One of the enumeration values that indicates the day of the week of the current DateTimeOffset object.

Примеры

В следующем примере выводится название дня недели первого дня каждого месяца в году 2008.The following example displays the weekday name of the first day of each month of the year 2008.

DateTimeOffset startOfMonth = new DateTimeOffset(2008, 1, 1, 0, 0, 0,
                                         DateTimeOffset.Now.Offset);
int year = startOfMonth.Year;
do
{
   Console.WriteLine("{0:MMM d, yyyy} is a {1}.", startOfMonth, startOfMonth.DayOfWeek);
   startOfMonth = startOfMonth.AddMonths(1);
}
while (startOfMonth.Year == year);
// This example writes the following output to the console:
//    Jan 1, 2008 is a Tuesday.
//    Feb 1, 2008 is a Friday.
//    Mar 1, 2008 is a Saturday.
//    Apr 1, 2008 is a Tuesday.
//    May 1, 2008 is a Thursday.
//    Jun 1, 2008 is a Sunday.
//    Jul 1, 2008 is a Tuesday.
//    Aug 1, 2008 is a Friday.
//    Sep 1, 2008 is a Monday.
//    Oct 1, 2008 is a Wednesday.
//    Nov 1, 2008 is a Saturday.
//    Dec 1, 2008 is a Monday.
Dim startOfMonth As New DateTimeOffset(#1/1/2008#, _
                                      DateTimeOffset.Now.Offset)
Dim year As Integer = startOfMonth.Year
Do While startOfMonth.Year = year
   Console.WriteLine("{0:MMM d, yyyy} is a {1}.", _
                     startOfMonth, startOfMonth.DayOfWeek)
   startOfMonth = startOfMonth.AddMonths(1)                   
Loop      
' This example writes the following output to the console:
'    Jan 1, 2008 is a Tuesday.
'    Feb 1, 2008 is a Friday.
'    Mar 1, 2008 is a Saturday.
'    Apr 1, 2008 is a Tuesday.
'    May 1, 2008 is a Thursday.
'    Jun 1, 2008 is a Sunday.
'    Jul 1, 2008 is a Tuesday.
'    Aug 1, 2008 is a Friday.
'    Sep 1, 2008 is a Monday.
'    Oct 1, 2008 is a Wednesday.
'    Nov 1, 2008 is a Saturday.
'    Dec 1, 2008 is a Monday.      

Комментарии

Значения констант в DayOfWeek диапазонах перечисления от DayOfWeek.Sunday до DayOfWeek.Saturday .The value of the constants in the DayOfWeek enumeration ranges from DayOfWeek.Sunday to DayOfWeek.Saturday. Если приведение к целому числу, его значение лежит в диапазоне от нуля (что означает DayOfWeek.Sunday ) до шести (что означает DayOfWeek.Saturday ).If cast to an integer, its value ranges from zero (which indicates DayOfWeek.Sunday) to six (which indicates DayOfWeek.Saturday).

Можно также отобразить название дня недели для определенной даты с помощью описателя формата "D" или описателя настраиваемого формата "dddd".You can also display the weekday name of a particular date by using the "D" format specifier or the "dddd" custom format specifier. Пример:For example:

DateTimeOffset displayDate = new DateTimeOffset(2008, 1, 1, 13, 18, 00,
                                                DateTimeOffset.Now.Offset);
Console.WriteLine("{0:D}", displayDate);  // Output: Tuesday, January 01, 2008
Console.WriteLine("{0:d} is a {0:dddd}.",
                  displayDate);           // Output: 1/1/2008 is a Tuesday.
Dim displayDate As New DateTimeOffset(#1/1/2008 1:18PM#, _
                                      DateTimeOffset.Now.Offset)
Console.WriteLine("{0:D}", displayDate)    ' Output: Tuesday, January 01, 2008                     
Console.WriteLine("{0:d} is a {0:dddd}.", _
                  displayDate)             ' Output: 1/1/2008 is a Tuesday.

Обратите внимание, что строка, возвращаемая путем вызова ToString метода DayOfWeek члена перечисления, возвращаемого этим свойством, не локализована.Note that the string returned by calling the ToString method of the DayOfWeek enumeration member that is returned by this property is not localized. Чтобы извлечь строку, содержащую название дня недели текущего языка и региональных параметров или определенного языка и региональных параметров, вызовите ToString метод с помощью настраиваемого описателя формата "dddd".To extract a string that contains the weekday name of the current culture or of a specific culture, call the ToString method with the "dddd" custom format specifier. Например, следующий код отображает название дня недели для даты с помощью fr-fr языка и региональных параметров.For example, the following code displays the weekday name for a date using the fr-fr culture.

DateTimeOffset thisDate = new DateTimeOffset(2007, 6, 1, 6, 15, 0,
                                             DateTimeOffset.Now.Offset);
string weekdayName = thisDate.ToString("dddd",
                                       new CultureInfo("fr-fr"));
Console.WriteLine(weekdayName);                  // Displays vendredi
Dim thisDate As New DateTimeOffset(#6/1/2007 6:15AM#, _
                                      DateTimeOffset.Now.Offset)
Dim weekdayName As String = thisDate.ToString("dddd", _
                            New CultureInfo("fr-fr")) 
Console.WriteLine(weekdayName)                        ' Displays vendredi     

Применяется к