DateTime Costruttori

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(long ticks);

public DateTime (long ticks);

new DateTime : int64 -> DateTime

Public Sub New (ticks As Long)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene illustrato uno dei DateTime costruttori.

// This example demonstrates the DateTime(Int64) constructor.
using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Instead of using the implicit, default "G" date and time format string, we 
   // use a custom format string that aligns the results and inserts leading zeroes.
   String^ format = "{0}) The {1} date and time is {2:MM/dd/yyyy hh:mm:ss tt}";
   
   // Create a DateTime for the maximum date and time using ticks.
   DateTime dt1 = DateTime(DateTime::MaxValue.Ticks);
   
   // Create a DateTime for the minimum date and time using ticks.
   DateTime dt2 = DateTime(DateTime::MinValue.Ticks);
   
   // Create a custom DateTime for 7/28/1979 at 10:35:05 PM using a 
   // calendar based on the "en-US" culture, and ticks. 
   Int64 ticks = DateTime(1979,07,28,22,35,5,(gcnew CultureInfo( "en-US",false ))->Calendar).Ticks;
   DateTime dt3 = DateTime(ticks);
   Console::WriteLine( format, 1, "maximum", dt1 );
   Console::WriteLine( format, 2, "minimum", dt2 );
   Console::WriteLine( format, 3, "custom ", dt3 );
   Console::WriteLine( "\nThe custom date and time is created from {0:N0} ticks.", ticks );
}

/*
This example produces the following results:

1) The maximum date and time is 12/31/9999 11:59:59 PM
2) The minimum date and time is 01/01/0001 12:00:00 AM
3) The custom  date and time is 07/28/1979 10:35:05 PM

The custom date and time is created from 624,376,461,050,000,000 ticks.

*/

// This example demonstrates the DateTime(Int64) constructor.
open System
open System.Globalization

// Create a DateTime for the maximum date and time using ticks.
let dt1 = DateTime DateTime.MaxValue.Ticks

// Create a DateTime for the minimum date and time using ticks.
let dt2 = DateTime DateTime.MinValue.Ticks

// Create a custom DateTime for 7/28/1979 at 10:35:05 PM using a
// calendar based on the "en-US" culture, and ticks.
let ticks = DateTime(1979, 07, 28, 22, 35, 5, CultureInfo("en-US", false).Calendar).Ticks
let dt3 = DateTime ticks

printfn $"""1) The maximum date and time is {dt1.ToString "MM-dd/yyyy hh:mm:ss tt"}"""
printfn $"""2) The minimum date and time is {dt2.ToString "MM/dd/yyyy hh:mm:ss tt"}"""
printfn $"""3) The custom  date and time is {dt3.ToString "MM/dd/yyyy hh:mm:ss tt"}"""

printfn $"\nThe custom date and time is created from {ticks:N0} ticks."

// This example produces the following results:
//
// 1) The maximum date and time is 12/31/9999 11:59:59 PM
// 2) The minimum date and time is 01/01/0001 12:00:00 AM
// 3) The custom  date and time is 07/28/1979 10:35:05 PM
//
// The custom date and time is created from 624,376,461,050,000,000 ticks.

// This example demonstrates the DateTime(Int64) constructor.
using System;
using System.Globalization;

class Sample
{
    public static void Main()
    {
// Instead of using the implicit, default "G" date and time format string, we
// use a custom format string that aligns the results and inserts leading zeroes.
    string format = "{0}) The {1} date and time is {2:MM/dd/yyyy hh:mm:ss tt}";

// Create a DateTime for the maximum date and time using ticks.
    DateTime dt1 = new DateTime(DateTime.MaxValue.Ticks);

// Create a DateTime for the minimum date and time using ticks.
    DateTime dt2 = new DateTime(DateTime.MinValue.Ticks);

// Create a custom DateTime for 7/28/1979 at 10:35:05 PM using a
// calendar based on the "en-US" culture, and ticks.
    long ticks = new DateTime(1979, 07, 28, 22, 35, 5,
    new CultureInfo("en-US", false).Calendar).Ticks;
    DateTime dt3 = new DateTime(ticks);

    Console.WriteLine(format, 1, "maximum", dt1);
    Console.WriteLine(format, 2, "minimum", dt2);
    Console.WriteLine(format, 3, "custom ", dt3);
    Console.WriteLine("\nThe custom date and time is created from {0:N0} ticks.", ticks);
    }
}
/*
This example produces the following results:

1) The maximum date and time is 12/31/9999 11:59:59 PM
2) The minimum date and time is 01/01/0001 12:00:00 AM
3) The custom  date and time is 07/28/1979 10:35:05 PM

The custom date and time is created from 624,376,461,050,000,000 ticks.

*/

' This example demonstrates the DateTime(Int64) constructor.
Imports System.Globalization

Class Sample
   Public Shared Sub Main()
      ' Instead of using the implicit, default "G" date and time format string, we 
      ' use a custom format string that aligns the results and inserts leading zeroes.
      Dim format As String = "{0}) The {1} date and time is {2:MM/dd/yyyy hh:mm:ss tt}"
      
      ' Create a DateTime for the maximum date and time using ticks.
      Dim dt1 As New DateTime(DateTime.MaxValue.Ticks)
      
      ' Create a DateTime for the minimum date and time using ticks.
      Dim dt2 As New DateTime(DateTime.MinValue.Ticks)
      
      ' Create a custom DateTime for 7/28/1979 at 10:35:05 PM using a 
      ' calendar based on the "en-US" culture, and ticks. 
      Dim ticks As Long = New DateTime(1979, 7, 28, 22, 35, 5, _
                                       New CultureInfo("en-US", False).Calendar).Ticks
      Dim dt3 As New DateTime(ticks)
      
      Console.WriteLine(format, 1, "maximum", dt1)
      Console.WriteLine(format, 2, "minimum", dt2)
      Console.WriteLine(format, 3, "custom ", dt3)
      Console.WriteLine(vbCrLf & "The custom date and time is created from {0:N0} ticks.", ticks)
   End Sub
End Class
'
'This example produces the following results:
'
'1) The maximum date and time is 12/31/9999 11:59:59 PM
'2) The minimum date and time is 01/01/0001 12:00:00 AM
'3) The custom  date and time is 07/28/1979 10:35:05 PM
'
'The custom date and time is created from 624,376,461,050,000,000 ticks.
'

Commenti

La proprietà Kind viene inizializzata su Unspecified.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, System::Globalization::Calendar ^ calendar);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, System.Globalization.Calendar calendar);

new DateTime : int * int * int * int * int * int * int * int * System.Globalization.Calendar -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, microsecond As Integer, calendar As Calendar)

Parametri

Eccezioni

Commenti

I valori consentiti per yeari parametri , monthe day dipendono dal calendar parametro . Viene generata un'eccezione se la data e l'ora specificate non possono essere espresse utilizzando calendar.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, DateTimeKind kind);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, DateTimeKind kind);

new DateTime : int * int * int * int * int * int * int * int * DateTimeKind -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, microsecond As Integer, kind As DateTimeKind)

Parametri

Eccezioni

Commenti

Questo costruttore interpreta yeare monthday come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando l'anno, il mese e il giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind) costruttore.

Per le applicazioni in cui la portabilità dei dati di data e ora o un grado limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, System::Globalization::Calendar ^ calendar, DateTimeKind kind);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, System.Globalization.Calendar calendar, DateTimeKind kind);

new DateTime : int * int * int * int * int * int * int * System.Globalization.Calendar * DateTimeKind -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, calendar As Calendar, kind As DateTimeKind)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene chiamato due volte il costruttore per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind) di due DateTime valori. La prima chiamata crea un'istanza di un DateTime valore usando un PersianCalendar oggetto. Poiché il calendario persiano non può essere designato come calendario predefinito per una cultura, la visualizzazione di una data nel calendario persiano richiede singole chiamate ai PersianCalendar.GetMonthrelativi metodi , PersianCalendar.GetDayOfMonthe PersianCalendar.GetYear . La seconda chiamata al costruttore crea un'istanza di un DateTime valore usando un HijriCalendar oggetto. Nell'esempio vengono modificate le impostazioni cultura correnti in Arabo (Siria) e viene modificato il calendario predefinito della cultura corrente nel calendario Hijri. Poiché Hijri è il calendario predefinito delle impostazioni cultura correnti, il Console.WriteLine metodo lo usa per formattare la data. Quando le impostazioni cultura correnti precedenti (ovvero inglese (Stati Uniti) vengono ripristinate in questo caso, il Console.WriteLine metodo usa il calendario gregoriano predefinito della cultura corrente per formattare la data.

using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.WriteLine("Using the Persian Calendar:");
      PersianCalendar persian = new PersianCalendar();
      DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 18, 500,
                                    persian, DateTimeKind.Local);
      Console.WriteLine("{0:M/dd/yyyy h:mm:ss.fff tt} {1}", date1, date1.Kind);
      Console.WriteLine("{0}/{1}/{2} {3}{8}{4:D2}{8}{5:D2}.{6:G3} {7}\n",
                                       persian.GetMonth(date1),
                                       persian.GetDayOfMonth(date1),
                                       persian.GetYear(date1),
                                       persian.GetHour(date1),
                                       persian.GetMinute(date1),
                                       persian.GetSecond(date1),
                                       persian.GetMilliseconds(date1),
                                       date1.Kind,
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator);

      Console.WriteLine("Using the Hijri Calendar:");
      // Get current culture so it can later be restored.
      CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;

      // Define strings for use in composite formatting.
      string dFormat;
      string fmtString;
      // Define Hijri calendar.
      HijriCalendar hijri = new HijriCalendar();
      // Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
      CultureInfo current = CultureInfo.CurrentCulture;
      current.DateTimeFormat.Calendar = hijri;
      dFormat = current.DateTimeFormat.ShortDatePattern;
      // Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff";
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}";
      DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, 500,
                                    hijri, DateTimeKind.Local);
      Console.WriteLine(fmtString, current, GetCalendarName(hijri),
                        date2, date2.Kind);

      // Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture;
      dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff";
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}";
      Console.WriteLine(fmtString,
                        CultureInfo.CurrentCulture,
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar),
                        date2, date2.Kind);
   }

   private static string GetCalendarName(Calendar cal)
   {
      return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
   }
}
// The example displays the following output:
//    Using the Persian Calendar:
//    8/18/2010 4:32:18.500 PM Local
//    5/27/1389 16:32:18.500 Local
//
//    Using the Hijri Calendar:
//    ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500 Local
//    en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500 Local

open System
open System.Globalization
open System.Text.RegularExpressions
open System.Threading

let getCalendarName (cal: Calendar) =
      Regex.Match(string cal, "\\.(\\w+)Calendar").Groups[1].Value

printfn "Using the Persian Calendar:"
let persian = PersianCalendar()
let date1 = DateTime(1389, 5, 27, 16, 32, 18, 500, persian, DateTimeKind.Local)
printfn $"""{date1.ToString "M/dd/yyyy h:mm:ss.fff tt"} {date1.Kind}"""
let sep = DateTimeFormatInfo.CurrentInfo.TimeSeparator
printfn $"{persian.GetMonth date1}/{persian.GetDayOfMonth date1}/{persian.GetYear date1} {persian.GetHour date1}{sep}{persian.GetMinute date1:D2}{sep}{persian.GetSecond date1:D2}.{persian.GetMilliseconds date1:G3} {date1.Kind}\n"

printfn "Using the Hijri Calendar:"
// Get current culture so it can later be restored.
let dftCulture = Thread.CurrentThread.CurrentCulture

// Define Hijri calendar.
let hijri = HijriCalendar()
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture <- CultureInfo "ar-SY"
let current = CultureInfo.CurrentCulture
current.DateTimeFormat.Calendar <- hijri

let dFormat = 
    let dFormat = current.DateTimeFormat.ShortDatePattern
    // Ensure year is displayed as four digits.
    Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff"

let fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}"
let date2 = DateTime(1431, 9, 9, 16, 32, 18, 500, hijri, DateTimeKind.Local)
Console.WriteLine(fmtString, current, getCalendarName hijri, date2, date2.Kind)

// Restore previous culture.
Thread.CurrentThread.CurrentCulture <- dftCulture
let dFormat2 = DateTimeFormatInfo.CurrentInfo.ShortDatePattern + " H:mm:ss.fff"
let fmtString2 = "{0} culture using the {1} calendar: {2:" + dFormat2 + "} {3}"
Console.WriteLine(fmtString2, CultureInfo.CurrentCulture, getCalendarName CultureInfo.CurrentCulture.Calendar, date2, date2.Kind)


// The example displays the following output:
//    Using the Persian Calendar:
//    8/18/2010 4:32:18.500 PM Local
//    5/27/1389 16:32:18.500 Local
//
//    Using the Hijri Calendar:
//    ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500 Local
//    en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500 Local

Imports System.Globalization
Imports System.Text.RegularExpressions
Imports System.Threading

Module Example
   Public Sub Main()
      Console.WriteLine("Using the Persian Calendar:")
      Dim persian As New PersianCalendar()
      Dim date1 As New Date(1389, 5, 27, 16, 32, 18, 500, _
                            persian, DateTimeKind.Local)
      Console.WriteLine("{0:M/dd/yyyy h:mm:ss.fff tt} {1}", date1, date1.Kind)
      Console.WriteLine("{0}/{1}/{2} {3}{8}{4:D2}{8}{5:D2}.{6:G3} {7}", _
                                       persian.GetMonth(date1), _
                                       persian.GetDayOfMonth(date1), _
                                       persian.GetYear(date1), _
                                       persian.GetHour(date1), _
                                       persian.GetMinute(date1), _
                                       persian.GetSecond(date1), _
                                       persian.GetMilliseconds(date1), _
                                       date1.Kind, _
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator)
      Console.WriteLine()
      
      Console.WriteLine("Using the Hijri Calendar:")
      ' Get current culture so it can later be restored.
      Dim dftCulture As CultureInfo = Thread.CurrentThread.CurrentCulture
      
      ' Define strings for use in composite formatting.
      Dim dFormat As String 
      Dim fmtString As String 
      ' Define Hijri calendar.
      Dim hijri As New HijriCalendar()
      ' Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = New CultureInfo("ar-SY")
      Dim current As CultureInfo = CultureInfo.CurrentCulture
      current.DateTimeFormat.Calendar = hijri
      dFormat = current.DateTimeFormat.ShortDatePattern
      ' Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff"
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}"
      Dim date2 As New Date(1431, 9, 9, 16, 32, 18, 500, _
                            hijri, DateTimeKind.Local)
      Console.WriteLine(fmtString, current, GetCalendarName(hijri), _
                        date2, date2.Kind) 

      ' Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture
      dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff"
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}"
      Console.WriteLine(fmtString, CultureInfo.CurrentCulture, _
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar), _
                        date2, date2.Kind) 
   End Sub
   
   Private Function GetCalendarName(cal As Calendar) As String
      Return Regex.Match(cal.ToString(), "\.(\w+)Calendar").Groups(1).Value
   End Function
End Module
' The example displays the following output:
'       Using the Persian Calendar:
'       8/18/2010 4:32:18.500 PM
'       5/27/1389 16:32:18.500
'       
'       Using the Hijri Calendar:
'       ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500
'       en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500

Commenti

I valori consentiti per year, monthe day parametri dipendono dal calendar parametro . Viene generata un'eccezione se non è possibile esprimere la data e l'ora specificati usando calendar.

Per le applicazioni in cui la portabilità dei dati di data e ora o un grado limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Lo System.Globalization spazio dei nomi fornisce diversi calendari, tra cui GregorianCalendar e JulianCalendar.

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond);

new DateTime : int * int * int * int * int * int * int * int -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, microsecond As Integer)

Parametri

Eccezioni

Commenti

Questo costruttore interpreta year, month e day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando l'anno, il mese e il giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar) costruttore.

La proprietà Kind viene inizializzata su Unspecified.

Per le applicazioni in cui la portabilità dei dati di data e ora o un grado limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, System::Globalization::Calendar ^ calendar);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, System.Globalization.Calendar calendar);

new DateTime : int * int * int * int * int * int * int * System.Globalization.Calendar -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, calendar As Calendar)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene chiamato due volte il costruttore per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar) di due DateTime valori. La prima chiamata crea un'istanza di un DateTime valore usando un PersianCalendar oggetto. Poiché il calendario persiano non può essere designato come calendario predefinito per una cultura, la visualizzazione di una data nel calendario persiano richiede singole chiamate ai PersianCalendar.GetMonthrelativi metodi , PersianCalendar.GetDayOfMonthe PersianCalendar.GetYear . La seconda chiamata al costruttore crea un'istanza di un DateTime valore usando un HijriCalendar oggetto. Nell'esempio vengono modificate le impostazioni cultura correnti in Arabo (Siria) e viene modificato il calendario predefinito della cultura corrente nel calendario Hijri. Poiché Hijri è il calendario predefinito delle impostazioni cultura correnti, il Console.WriteLine metodo lo usa per formattare la data. Quando le impostazioni cultura correnti precedenti (ovvero inglese (Stati Uniti) vengono ripristinate in questo caso, il Console.WriteLine metodo usa il calendario gregoriano predefinito della cultura corrente per formattare la data.

using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.WriteLine("Using the Persian Calendar:");
      PersianCalendar persian = new PersianCalendar();
      DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 18, 500, persian);
      Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"));
      Console.WriteLine("{0}/{1}/{2} {3}{7}{4:D2}{7}{5:D2}.{6:G3}\n",
                                       persian.GetMonth(date1),
                                       persian.GetDayOfMonth(date1),
                                       persian.GetYear(date1),
                                       persian.GetHour(date1),
                                       persian.GetMinute(date1),
                                       persian.GetSecond(date1),
                                       persian.GetMilliseconds(date1),
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator);

      Console.WriteLine("Using the Hijri Calendar:");
      // Get current culture so it can later be restored.
      CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;

      // Define strings for use in composite formatting.
      string dFormat;
      string fmtString;
      // Define Hijri calendar.
      HijriCalendar hijri = new HijriCalendar();
      // Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
      CultureInfo current = CultureInfo.CurrentCulture;
      current.DateTimeFormat.Calendar = hijri;
      dFormat = current.DateTimeFormat.ShortDatePattern;
      // Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff";
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}";
      DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, 500, hijri);
      Console.WriteLine(fmtString, current, GetCalendarName(hijri), date2);

      // Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture;
      dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff";
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}";
      Console.WriteLine(fmtString,
                        CultureInfo.CurrentCulture,
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar),
                        date2);
   }

   private static string GetCalendarName(Calendar cal)
   {
      return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
   }
}
// The example displays the following output:
//       8/18/2010 4:32:18.500 PM
//       5/27/1389 16:32:18.500
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500
//       en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500

open System
open System.Globalization
open System.Text.RegularExpressions
open System.Threading

let getCalendarName (cal: Calendar) =
      Regex.Match(string cal, "\\.(\\w+)Calendar").Groups[1].Value

printfn "Using the Persian Calendar:"
let persian = PersianCalendar()
let date1 = DateTime(1389, 5, 27, 16, 32, 18, 500, persian)
printfn $"""{date1.ToString("M/dd/yyyy h:mm:ss.fff tt")}"""
let sep = DateTimeFormatInfo.CurrentInfo.TimeSeparator
printfn $"{persian.GetMonth date1}/{persian.GetDayOfMonth date1}/{persian.GetYear date1} {persian.GetHour date1}{sep}%02i{persian.GetMinute date1}{sep}%02i{persian.GetSecond date1}.%.3f{persian.GetMilliseconds date1}\n"

printfn "Using the Hijri Calendar:"
// Get current culture so it can later be restored.
let dftCulture = Thread.CurrentThread.CurrentCulture

// Define Hijri calendar.
let hijri = HijriCalendar()
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture <- CultureInfo "ar-SY"
let current = CultureInfo.CurrentCulture
current.DateTimeFormat.Calendar <- hijri

let dFormat = 
    let dFormat = current.DateTimeFormat.ShortDatePattern
    // Ensure year is displayed as four digits.
    Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff"

let fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}"
let date2 = DateTime(1431, 9, 9, 16, 32, 18, 500, hijri)
Console.WriteLine(fmtString, current, getCalendarName hijri, date2)

// Restore previous culture.
Thread.CurrentThread.CurrentCulture <- dftCulture
let dFormat2 = DateTimeFormatInfo.CurrentInfo.ShortDatePattern + " H:mm:ss.fff"
let fmtString2 = "{0} culture using the {1} calendar: {2:" + dFormat + "}"
Console.WriteLine(fmtString2, CultureInfo.CurrentCulture, getCalendarName CultureInfo.CurrentCulture.Calendar, date2)


// The example displays the following output:
//       8/18/2010 4:32:18.500 PM
//       5/27/1389 16:32:18.500
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500
//       en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500

Imports System.Globalization
Imports System.Text.RegularExpressions
Imports System.Threading

Module Example
   Public Sub Main()
      Console.WriteLine("Using the Persian Calendar:")
      Dim persian As New PersianCalendar()
      Dim date1 As New Date(1389, 5, 27, 16, 32, 18, 500, persian)
      Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"))
      Console.WriteLine("{0}/{1}/{2} {3}{7}{4:D2}{7}{5:D2}.{6:G3}", _
                                       persian.GetMonth(date1), _
                                       persian.GetDayOfMonth(date1), _
                                       persian.GetYear(date1), _
                                       persian.GetHour(date1), _
                                       persian.GetMinute(date1), _
                                       persian.GetSecond(date1), _
                                       persian.GetMilliseconds(date1), _
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator)
      Console.WriteLine()
      
      Console.WriteLine("Using the Hijri Calendar:")
      ' Get current culture so it can later be restored.
      Dim dftCulture As CultureInfo = Thread.CurrentThread.CurrentCulture
      
      ' Define strings for use in composite formatting.
      Dim dFormat As String 
      Dim fmtString As String 
      ' Define Hijri calendar.
      Dim hijri As New HijriCalendar()
      ' Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = New CultureInfo("ar-SY")
      Dim current As CultureInfo = CultureInfo.CurrentCulture
      current.DateTimeFormat.Calendar = hijri
      dFormat = current.DateTimeFormat.ShortDatePattern
      ' Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff"
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}"
      Dim date2 As New Date(1431, 9, 9, 16, 32, 18, 500, hijri)
      Console.WriteLine(fmtString, current, GetCalendarName(hijri), date2) 

      ' Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture
      dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff"
      fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}"
      Console.WriteLine(fmtString, CultureInfo.CurrentCulture, _
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar), _
                        date2) 
   End Sub
   
   Private Function GetCalendarName(cal As Calendar) As String
      Return Regex.Match(cal.ToString(), "\.(\w+)Calendar").Groups(1).Value
   End Function
End Module
' The example displays the following output:
'       Using the Persian Calendar:
'       8/18/2010 4:32:18.500 PM
'       5/27/1389 16:32:18.500
'       
'       Using the Hijri Calendar:
'       ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500
'       en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500

Commenti

La proprietà Kind viene inizializzata su Unspecified.

I valori consentiti per year, monthe day dipendono da calendar. Viene generata un'eccezione se la data e l'ora specificate non possono essere espresse utilizzando calendar.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Lo System.Globalization spazio dei nomi fornisce diversi calendari, tra cui GregorianCalendar e JulianCalendar.

Vedi anche

• Int32
• Calendar

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, DateTimeKind kind);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, DateTimeKind kind);

new DateTime : int * int * int * int * int * int * int * DateTimeKind -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, kind As DateTimeKind)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene utilizzato il costruttore per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind) di un DateTime valore.

DateTime date1 = new DateTime(2010, 8, 18, 16, 32, 18, 500,
                              DateTimeKind.Local);
Console.WriteLine("{0:M/dd/yyyy h:mm:ss.fff tt} {1}", date1, date1.Kind);
// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:18.500 PM Local

let date1 = DateTime(2010, 8, 18, 16, 32, 18, 500, DateTimeKind.Local)
printfn $"""{date1.ToString "M/dd/yyyy h:mm:ss.fff tt"} {date1.Kind}"""

// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:18.500 PM Local

Dim date1 As New Date(2010, 8, 18, 16, 32, 18, 500, DateTimeKind.Local)
Console.WriteLine("{0:M/dd/yyyy h:mm:ss.fff tt} {1}", date1, date1.Kind)
' The example displays the following output:
'      8/18/2010 4:32:18.500 PM Local

Commenti

Questo costruttore interpretayear, monthe day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando anno, mese e giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind) costruttore.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond);

new DateTime : int * int * int * int * int * int * int -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene utilizzato il costruttore per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32) di un DateTime valore.

DateTime date1 = new DateTime(2010, 8, 18, 16, 32, 18, 500);
Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"));
// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:18.500 PM

let date1 = DateTime(2010, 8, 18, 16, 32, 18, 500)

date1.ToString "M/dd/yyyy h:mm:ss.fff tt"
|> printfn "%s"

// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:18.500 PM

Dim date1 As New Date(2010, 8, 18, 16, 32, 18, 500)
Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"))
' The example displays the following output:
'      8/18/2010 4:32:18.500 PM

Commenti

Questo costruttore interpretayear, monthe day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando anno, mese e giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar) costruttore.

La proprietà Kind viene inizializzata su Unspecified.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Vedi anche

• Int32

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, System::Globalization::Calendar ^ calendar, DateTimeKind kind);

public DateTime (int year, int month, int day, int hour, int minute, int second, int millisecond, int microsecond, System.Globalization.Calendar calendar, DateTimeKind kind);

new DateTime : int * int * int * int * int * int * int * int * System.Globalization.Calendar * DateTimeKind -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, millisecond As Integer, microsecond As Integer, calendar As Calendar, kind As DateTimeKind)

Parametri

Eccezioni

Commenti

I valori consentiti per yeari parametri , monthe day dipendono dal calendar parametro . Viene generata un'eccezione se la data e l'ora specificate non possono essere espresse utilizzando calendar.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, DateTimeKind kind);

public DateTime (int year, int month, int day, int hour, int minute, int second, DateTimeKind kind);

new DateTime : int * int * int * int * int * int * DateTimeKind -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, kind As DateTimeKind)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene utilizzato il costruttore per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind) di un DateTime valore.

DateTime date1 = new DateTime(2010, 8, 18, 16, 32, 0, DateTimeKind.Local);
Console.WriteLine("{0} {1}", date1, date1.Kind);
// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:00 PM Local

let date1 = DateTime(2010, 8, 18, 16, 32, 0, DateTimeKind.Local)
printfn $"{date1} {date1.Kind}"

// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:00 PM Local

Dim date1 As New Date(2010, 8, 18, 16, 32, 0, DateTimeKind.Local)
Console.WriteLine("{0} {1}", date1, date1.Kind)
' The example displays the following output:
'      8/18/2010 4:32:00 PM Local

Commenti

Questo costruttore interpretayear, monthe day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando anno, mese e giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind) costruttore.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second);

public DateTime (int year, int month, int day, int hour, int minute, int second);

new DateTime : int * int * int * int * int * int -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene utilizzato il costruttore per creare un'istanza DateTime di un DateTime valore.

DateTime date1 = new DateTime(2010, 8, 18, 16, 32, 0);
Console.WriteLine(date1.ToString());
// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:00 PM

let date1 = DateTime(2010, 8, 18, 16, 32, 0)
printfn $"{date1}"

// The example displays the following output, in this case for en-us culture:
//      8/18/2010 4:32:00 PM

Dim date1 As New Date(2010, 8, 18, 16, 32, 0)
Console.WriteLine(date1.ToString())
' The example displays the following output:
'      8/18/2010 4:32:00 PM

Commenti

La proprietà Kind viene inizializzata su Unspecified.

Questo costruttore interpretayear, monthe day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando anno, mese e giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Calendar) costruttore.

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, System::Globalization::Calendar ^ calendar);

public DateTime (int year, int month, int day, System.Globalization.Calendar calendar);

new DateTime : int * int * int * System.Globalization.Calendar -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, calendar As Calendar)

Parametri

Eccezioni

Esempio

L'esempio seguente chiama il costruttore due volte per creare un'istanza DateTime(Int32, Int32, Int32, Calendar) di due DateTime valori. La prima chiamata crea un'istanza di un DateTime valore usando un PersianCalendar oggetto . Poiché il calendario persiano non può essere designato come calendario predefinito per le impostazioni cultura, la visualizzazione di una data nel calendario persiano richiede singole chiamate ai PersianCalendar.GetMonthrelativi metodi , PersianCalendar.GetDayOfMonthe PersianCalendar.GetYear . La seconda chiamata al costruttore crea un'istanza di un DateTime valore usando un HijriCalendar oggetto . L'esempio modifica le impostazioni cultura correnti in Arabo (Siria) e modifica il calendario predefinito delle impostazioni cultura correnti nel calendario Hijri. Poiché Hijri è il calendario predefinito delle impostazioni cultura correnti, il Console.WriteLine metodo lo usa per formattare la data. Quando vengono ripristinate le impostazioni cultura correnti precedenti ,ovvero inglese (Stati Uniti) in questo caso, il Console.WriteLine metodo usa il calendario gregoriano predefinito delle impostazioni cultura correnti per formattare la data.

using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.WriteLine("Using the Persian Calendar:");
      PersianCalendar persian = new PersianCalendar();
      DateTime date1 = new DateTime(1389, 5, 27, persian);
      Console.WriteLine(date1.ToString());
      Console.WriteLine("{0}/{1}/{2}\n", persian.GetMonth(date1),
                                       persian.GetDayOfMonth(date1),
                                       persian.GetYear(date1));

      Console.WriteLine("Using the Hijri Calendar:");
      // Get current culture so it can later be restored.
      CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;

      // Define Hijri calendar.
      HijriCalendar hijri = new HijriCalendar();
      // Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
      CultureInfo current = CultureInfo.CurrentCulture;
      current.DateTimeFormat.Calendar = hijri;
      string dFormat = current.DateTimeFormat.ShortDatePattern;
      // Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy");
      current.DateTimeFormat.ShortDatePattern = dFormat;
      DateTime date2 = new DateTime(1431, 9, 9, hijri);
      Console.WriteLine("{0} culture using the {1} calendar: {2:d}", current,
                        GetCalendarName(hijri), date2);

      // Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture;
      Console.WriteLine("{0} culture using the {1} calendar: {2:d}",
                        CultureInfo.CurrentCulture,
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar),
                        date2);
   }

   private static string GetCalendarName(Calendar cal)
   {
      return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
   }
}
// The example displays the following output:
//       Using the Persian Calendar:
//       8/18/2010 12:00:00 AM
//       5/27/1389
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431
//       en-US culture using the Gregorian calendar: 8/18/2010

open System
open System.Globalization
open System.Text.RegularExpressions
open System.Threading

let getCalendarName (cal: Calendar) =
    Regex.Match(string cal, "\\.(\\w+)Calendar").Groups[1].Value

printfn "Using the Persian Calendar:"
let persian = PersianCalendar()
let date1 = DateTime(1389, 5, 27, persian)
printfn $"{date1}"
printfn $"{persian.GetMonth date1}/{persian.GetDayOfMonth date1}/{persian.GetYear date1}\n"

printfn "Using the Hijri Calendar:"
// Get current culture so it can later be restored.
let dftCulture = Thread.CurrentThread.CurrentCulture

// Define Hijri calendar.
let hijri = HijriCalendar()
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture <- CultureInfo "ar-SY"
let current = CultureInfo.CurrentCulture
current.DateTimeFormat.Calendar <- hijri

let dFormat =
    let dFormat = current.DateTimeFormat.ShortDatePattern
    // Ensure year is displayed as four digits.
    Regex.Replace(dFormat, "/yy$", "/yyyy")

current.DateTimeFormat.ShortDatePattern <- dFormat
let date2 = DateTime(1431, 9, 9, hijri)
printfn $"{current} culture using the {getCalendarName hijri} calendar: {date2:d}"

// Restore previous culture.
Thread.CurrentThread.CurrentCulture <- dftCulture
printfn $"{CultureInfo.CurrentCulture} culture using the {getCalendarName CultureInfo.CurrentCulture.Calendar} calendar: {date2:d}"


// The example displays the following output:
//       Using the Persian Calendar:
//       8/18/2010 12:00:00 AM
//       5/27/1389
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431
//       en-US culture using the Gregorian calendar: 8/18/2010

Imports System.Globalization
Imports System.Text.RegularExpressions
Imports System.Threading

Module Example
   Public Sub Main()
      Console.WriteLine("Using the Persian Calendar:")
      Dim persian As New PersianCalendar()
      Dim date1 As New Date(1389, 5, 27, persian)
      Console.WriteLine(date1.ToString())
      Console.WriteLine("{0}/{1}/{2}", persian.GetMonth(date1), _
                                       persian.GetDayOfMonth(date1), _
                                       persian.GetYear(date1))
      Console.WriteLine()
      
      Console.WriteLine("Using the Hijri Calendar:")
      ' Get current culture so it can later be restored.
      Dim dftCulture As CultureInfo = Thread.CurrentThread.CurrentCulture
      
      ' Define Hijri calendar.
      Dim hijri As New HijriCalendar()
      ' Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = New CultureInfo("ar-SY")
      Dim current As CultureInfo = CultureInfo.CurrentCulture
      current.DateTimeFormat.Calendar = hijri
      Dim dFormat As String = current.DateTimeFormat.ShortDatePattern
      ' Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy")
      current.DateTimeFormat.ShortDatePattern = dFormat
      Dim date2 As New Date(1431, 9, 9, hijri)
      Console.WriteLine("{0} culture using the {1} calendar: {2:d}", current, _
                        GetCalendarName(hijri), date2) 
      
      ' Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture
      Console.WriteLine("{0} culture using the {1} calendar: {2:d}", _
                        CultureInfo.CurrentCulture, _
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar), _
                        date2) 
   End Sub
   
   Private Function GetCalendarName(cal As Calendar) As String
      Return Regex.Match(cal.ToString(), "\.(\w+)Calendar").Groups(1).Value
   End Function
End Module
' The example displays the following output:
'       Using the Persian Calendar:
'       8/18/2010 12:00:00 AM
'       5/27/1389
'       
'       Using the Hijri Calendar:
'       ar-SY culture using the Hijri calendar: 09/09/1431
'       en-US culture using the Gregorian calendar: 8/18/2010

Commenti

L'ora del giorno per il risultato DateTime è mezzanotte (00:00:00). La proprietà Kind viene inizializzata su Unspecified.

I valori consentiti per year, monthe day dipendono da calendar. Viene generata un'eccezione se la data e l'ora specificate non possono essere espresse utilizzando calendar.

Lo System.Globalization spazio dei nomi fornisce diversi calendari, tra cui GregorianCalendar e JulianCalendar.

Vedi anche

• Int32
• Calendar

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day);

public DateTime (int year, int month, int day);

new DateTime : int * int * int -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer)

Parametri

Eccezioni

Esempio

Nell'esempio seguente viene utilizzato il costruttore per creare un'istanza DateTime(Int32, Int32, Int32) di un DateTime valore. Nell'esempio viene inoltre illustrato che questo overload crea un valore il DateTime cui componente ora è uguale a mezzanotte (o 0:00).

DateTime date1 = new DateTime(2010, 8, 18);
Console.WriteLine(date1.ToString());
// The example displays the following output:
//      8/18/2010 12:00:00 AM

let date1 = DateTime(2010, 8, 18)
printfn $"{date1}"

// The example displays the following output:
//      8/18/2010 12:00:00 AM

Dim date1 As New Date(2010, 8, 18)
Console.WriteLine(date1.ToString())
' The example displays the following output:
'      8/18/2010 12:00:00 AM

Commenti

Questo costruttore interpreta year, monthe day come anno, mese e giorno nel calendario gregoriano. Per creare un'istanza di un DateTime valore usando anno, mese e giorno in un altro calendario, chiamare il DateTime(Int32, Int32, Int32, Calendar) costruttore.

L'ora del giorno per il risultato DateTime è mezzanotte (00:00:00). La proprietà Kind viene inizializzata su DateTimeKind.Unspecified.

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(DateOnly date, TimeOnly time, DateTimeKind kind);

public DateTime (DateOnly date, TimeOnly time, DateTimeKind kind);

new DateTime : DateOnly * TimeOnly * DateTimeKind -> DateTime

Public Sub New (date As DateOnly, time As TimeOnly, kind As DateTimeKind)

Parametri

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(long ticks, DateTimeKind kind);

public DateTime (long ticks, DateTimeKind kind);

new DateTime : int64 * DateTimeKind -> DateTime

Public Sub New (ticks As Long, kind As DateTimeKind)

Parametri

Eccezioni

Commenti

Per le applicazioni in cui la portabilità dei dati di data e ora o un livello limitato di consapevolezza del fuso orario è importante, è possibile usare il costruttore corrispondente DateTimeOffset .

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(DateOnly date, TimeOnly time);

public DateTime (DateOnly date, TimeOnly time);

new DateTime : DateOnly * TimeOnly -> DateTime

Public Sub New (date As DateOnly, time As TimeOnly)

Parametri

Origine:

DateTime.cs

Origine:

DateTime.cs

Origine:

DateTime.cs

public:
 DateTime(int year, int month, int day, int hour, int minute, int second, System::Globalization::Calendar ^ calendar);

public DateTime (int year, int month, int day, int hour, int minute, int second, System.Globalization.Calendar calendar);

new DateTime : int * int * int * int * int * int * System.Globalization.Calendar -> DateTime

Public Sub New (year As Integer, month As Integer, day As Integer, hour As Integer, minute As Integer, second As Integer, calendar As Calendar)

Parametri

Eccezioni

Esempio

L'esempio seguente chiama il costruttore due volte per creare un'istanza DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Calendar) di due DateTime valori. La prima chiamata crea un'istanza di un DateTime valore usando un PersianCalendar oggetto . Poiché il calendario persiano non può essere designato come calendario predefinito per le impostazioni cultura, la visualizzazione di una data nel calendario persiano richiede singole chiamate ai PersianCalendar.GetMonthrelativi metodi , PersianCalendar.GetDayOfMonthe PersianCalendar.GetYear . La seconda chiamata al costruttore crea un'istanza di un DateTime valore usando un HijriCalendar oggetto . L'esempio modifica le impostazioni cultura correnti in Arabo (Siria) e modifica il calendario predefinito delle impostazioni cultura correnti nel calendario Hijri. Poiché Hijri è il calendario predefinito delle impostazioni cultura correnti, il Console.WriteLine metodo lo usa per formattare la data. Quando vengono ripristinate le impostazioni cultura correnti precedenti ,ovvero inglese (Stati Uniti) in questo caso, il Console.WriteLine metodo usa il calendario gregoriano predefinito delle impostazioni cultura correnti per formattare la data.

using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.WriteLine("Using the Persian Calendar:");
      PersianCalendar persian = new PersianCalendar();
      DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 0, persian);
      Console.WriteLine(date1.ToString());
      Console.WriteLine("{0}/{1}/{2} {3}{6}{4:D2}{6}{5:D2}\n",
                                       persian.GetMonth(date1),
                                       persian.GetDayOfMonth(date1),
                                       persian.GetYear(date1),
                                       persian.GetHour(date1),
                                       persian.GetMinute(date1),
                                       persian.GetSecond(date1),
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator);

      Console.WriteLine("Using the Hijri Calendar:");
      // Get current culture so it can later be restored.
      CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;

      // Define Hijri calendar.
      HijriCalendar hijri = new HijriCalendar();
      // Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
      CultureInfo current = CultureInfo.CurrentCulture;
      current.DateTimeFormat.Calendar = hijri;
      string dFormat = current.DateTimeFormat.ShortDatePattern;
      // Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy");
      current.DateTimeFormat.ShortDatePattern = dFormat;
      DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, hijri);
      Console.WriteLine("{0} culture using the {1} calendar: {2:g}", current,
                        GetCalendarName(hijri), date2);

      // Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture;
      Console.WriteLine("{0} culture using the {1} calendar: {2:g}",
                        CultureInfo.CurrentCulture,
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar),
                        date2);
   }

   private static string GetCalendarName(Calendar cal)
   {
      return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
   }
}
// The example displays the following output:
//       Using the Persian Calendar:
//       8/18/2010 4:32:00 PM
//       5/27/1389 16:32:00
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431 04:32 م
//       en-US culture using the Gregorian calendar: 8/18/2010 4:32 PM

open System
open System.Globalization
open System.Text.RegularExpressions
open System.Threading

let getCalendarName (cal: Calendar) =
    Regex.Match(string cal, "\\.(\\w+)Calendar").Groups[1].Value

printfn "Using the Persian Calendar:"
let persian = PersianCalendar()
let date1 = DateTime(1389, 5, 27, 16, 32, 0, persian)
printfn $"{date1}"
let sep = DateTimeFormatInfo.CurrentInfo.TimeSeparator
printfn $"{persian.GetMonth date1}/{persian.GetDayOfMonth date1}/{persian.GetYear date1} {persian.GetHour date1}{sep}%02i{persian.GetMinute date1}{sep}%02i{persian.GetSecond date1}\n"

printfn "Using the Hijri Calendar:"

// Get current culture so it can later be restored.
let dftCulture = Thread.CurrentThread.CurrentCulture

// Define Hijri calendar.
let hijri = HijriCalendar()

// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture <- CultureInfo "ar-SY"
let current = CultureInfo.CurrentCulture
current.DateTimeFormat.Calendar <- hijri
let dFormat = 
    let dFormat = current.DateTimeFormat.ShortDatePattern
    // Ensure year is displayed as four digits.
    Regex.Replace(dFormat, "/yy$", "/yyyy")

current.DateTimeFormat.ShortDatePattern <- dFormat
let date2 = DateTime(1431, 9, 9, 16, 32, 18, hijri)
printfn $"{current} culture using the {getCalendarName hijri} calendar: {date2:g}"

// Restore previous culture.
Thread.CurrentThread.CurrentCulture <- dftCulture
printfn $"{CultureInfo.CurrentCulture} culture using the {getCalendarName CultureInfo.CurrentCulture.Calendar} calendar: {date2:g}"


// The example displays the following output:
//       Using the Persian Calendar:
//       8/18/2010 4:32:00 PM
//       5/27/1389 16:32:00
//
//       Using the Hijri Calendar:
//       ar-SY culture using the Hijri calendar: 09/09/1431 04:32 م
//       en-US culture using the Gregorian calendar: 8/18/2010 4:32 PM

Imports System.Globalization
Imports System.Text.RegularExpressions
Imports System.Threading

Module Example
   Public Sub Main()
      Console.WriteLine("Using the Persian Calendar:")
      Dim persian As New PersianCalendar()
      Dim date1 As New Date(1389, 5, 27, 16, 32, 0, persian)
      Console.WriteLine(date1.ToString())
      Console.WriteLine("{0}/{1}/{2} {3}{6}{4:D2}{6}{5:D2}", persian.GetMonth(date1), _
                                       persian.GetDayOfMonth(date1), _
                                       persian.GetYear(date1), _
                                       persian.GetHour(date1), _
                                       persian.GetMinute(date1), _
                                       persian.GetSecond(date1), _
                                       DateTimeFormatInfo.CurrentInfo.TimeSeparator)
      Console.WriteLine()
      
      Console.WriteLine("Using the Hijri Calendar:")
      ' Get current culture so it can later be restored.
      Dim dftCulture As CultureInfo = Thread.CurrentThread.CurrentCulture
      
      ' Define Hijri calendar.
      Dim hijri As New HijriCalendar()
      ' Make ar-SY the current culture and Hijri the current calendar.
      Thread.CurrentThread.CurrentCulture = New CultureInfo("ar-SY")
      Dim current As CultureInfo = CultureInfo.CurrentCulture
      current.DateTimeFormat.Calendar = hijri
      Dim dFormat As String = current.DateTimeFormat.ShortDatePattern
      ' Ensure year is displayed as four digits.
      dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy")
      current.DateTimeFormat.ShortDatePattern = dFormat
      Dim date2 As New Date(1431, 9, 9, 16, 32, 0, hijri)
      Console.WriteLine("{0} culture using the {1} calendar: {2:g}", current, _
                        GetCalendarName(hijri), date2) 

      ' Restore previous culture.
      Thread.CurrentThread.CurrentCulture = dftCulture
      Console.WriteLine("{0} culture using the {1} calendar: {2:g}", _
                        CultureInfo.CurrentCulture, _
                        GetCalendarName(CultureInfo.CurrentCulture.Calendar), _
                        date2) 
   End Sub
   
   Private Function GetCalendarName(cal As Calendar) As String
      Return Regex.Match(cal.ToString(), "\.(\w+)Calendar").Groups(1).Value
   End Function
End Module
' The example displays the following output:
'       Using the Persian Calendar:
'       8/18/2010 4:32:00 PM
'       5/27/1389 16:32:00
'       
'       Using the Hijri Calendar:
'       ar-SY culture using the Hijri calendar: 09/09/1431 04:32 م
'       en-US culture using the Gregorian calendar: 8/18/2010 4:32 PM

Commenti

La proprietà Kind viene inizializzata su Unspecified.

I valori consentiti per year, monthe day dipendono da calendar. Viene generata un'eccezione se la data e l'ora specificate non possono essere espresse utilizzando calendar.

Lo System.Globalization spazio dei nomi fornisce diversi calendari, tra cui GregorianCalendar e JulianCalendar.

Vedi anche

• Int32
• Calendar