DateTime.Now Özellik

public:
 static property DateTime Now { DateTime get(); };

public static DateTime Now { get; }

member this.Now : DateTime

Public Shared ReadOnly Property Now As DateTime

Özellik Değeri

DateTime

Geçerli yerel tarih ve saat değeri olan bir nesne.An object whose value is the current local date and time.

Örnekler

Aşağıdaki örnek, Now UtcNow geçerli yerel tarih ve saati ve geçerli Evrensel Eşgüdümlü (UTC) Tarih ve saati almak için ve özelliklerini kullanır.The following example uses the Now and UtcNow properties to retrieve the current local date and time and the current universal coordinated (UTC) date and time. Daha sonra dizeleri göstermek için bir dizi kültürlerin biçimlendirme kurallarını ve bunların özelliklerinin değerlerini kullanır Kind .It then uses the formatting conventions of a number of cultures to display the strings, along with the values of the their Kind properties.

using namespace System;
using namespace System::Globalization;

void main()
{
   DateTime localDate = DateTime::Now;
   DateTime utcDate = DateTime::UtcNow;
   array<String^>^ cultureNames = { "en-US", "en-GB", "fr-FR",
                                    "de-DE", "ru-RU" } ;

   for each (String^ cultureName in cultureNames) {
      CultureInfo^ culture = gcnew CultureInfo(cultureName);
      Console::WriteLine("{0}:", culture->NativeName);
      Console::WriteLine("   Local date and time: {0}, {1:G}",
                         localDate.ToString(culture), localDate.Kind);
      Console::WriteLine("   UTC date and time: {0}, {1:G}\n",
                         utcDate.ToString(culture), utcDate.Kind);
   }
}
// The example displays the following output:
//       English (United States):
//          Local date and time: 6/19/2015 10:35:50 AM, Local
//          UTC date and time: 6/19/2015 5:35:50 PM, Utc
//
//       English (United Kingdom):
//          Local date and time: 19/06/2015 10:35:50, Local
//          UTC date and time: 19/06/2015 17:35:50, Utc
//
//       français (France):
//          Local date and time: 19/06/2015 10:35:50, Local
//          UTC date and time: 19/06/2015 17:35:50, Utc
//
//       Deutsch (Deutschland):
//          Local date and time: 19.06.2015 10:35:50, Local
//          UTC date and time: 19.06.2015 17:35:50, Utc
//
//       русский (Россия):
//          Local date and time: 19.06.2015 10:35:50, Local
//          UTC date and time: 19.06.2015 17:35:50, Utc

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      DateTime localDate = DateTime.Now;
      DateTime utcDate = DateTime.UtcNow;
      String[] cultureNames = { "en-US", "en-GB", "fr-FR",
                                "de-DE", "ru-RU" } ;

      foreach (var cultureName in cultureNames) {
         var culture = new CultureInfo(cultureName);
         Console.WriteLine("{0}:", culture.NativeName);
         Console.WriteLine("   Local date and time: {0}, {1:G}",
                           localDate.ToString(culture), localDate.Kind);
         Console.WriteLine("   UTC date and time: {0}, {1:G}\n",
                           utcDate.ToString(culture), utcDate.Kind);
      }
   }
}
// The example displays the following output:
//       English (United States):
//          Local date and time: 6/19/2015 10:35:50 AM, Local
//          UTC date and time: 6/19/2015 5:35:50 PM, Utc
//
//       English (United Kingdom):
//          Local date and time: 19/06/2015 10:35:50, Local
//          UTC date and time: 19/06/2015 17:35:50, Utc
//
//       français (France):
//          Local date and time: 19/06/2015 10:35:50, Local
//          UTC date and time: 19/06/2015 17:35:50, Utc
//
//       Deutsch (Deutschland):
//          Local date and time: 19.06.2015 10:35:50, Local
//          UTC date and time: 19.06.2015 17:35:50, Utc
//
//       русский (Россия):
//          Local date and time: 19.06.2015 10:35:50, Local
//          UTC date and time: 19.06.2015 17:35:50, Utc

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim localDate = DateTime.Now
      Dim utcDate = DateTime.UtcNow
      Dim cultureNames() As String = { "en-US", "en-GB", "fr-FR",
                                       "de-DE", "ru-RU" }

      For Each cultureName In cultureNames
         Dim culture As New CultureInfo(cultureName)
         Console.WriteLine("{0}:", culture.NativeName)
         Console.WriteLine("   Local date and time: {0}, {1:G}",
                           localDate.ToString(culture), localDate.Kind)
         Console.WriteLine("   UTC date and time: {0}, {1:G}",
                           utcDate.ToString(culture), utcDate.Kind)
         Console.WriteLine()
      Next
   End Sub
End Module
' The example displays the following output:
'       English (United States):
'          Local date and time: 6/19/2015 10:35:50 AM, Local
'          UTC date and time: 6/19/2015 5:35:50 PM, Utc
'
'       English (United Kingdom):
'          Local date and time: 19/06/2015 10:35:50, Local
'          UTC date and time: 19/06/2015 17:35:50, Utc
'
'       français (France):
'          Local date and time: 19/06/2015 10:35:50, Local
'          UTC date and time: 19/06/2015 17:35:50, Utc
'
'       Deutsch (Deutschland):
'          Local date and time: 19.06.2015 10:35:50, Local
'          UTC date and time: 19.06.2015 17:35:50, Utc
'
'       русский (Россия):
'          Local date and time: 19.06.2015 10:35:50, Local
'          UTC date and time: 19.06.2015 17:35:50, Utc

Açıklamalar

NowÖzelliği, DateTime yerel bilgisayardaki geçerli tarih ve saati temsil eden bir değer döndürür.The Now property returns a DateTime value that represents the current date and time on the local computer. DateTime1 Ocak 0001 gece yarısından beri geçen işaret sayısını ve bu değerin dize gösterimini temsil eden bir değer arasında bir farklılık olduğunu unutmayın. Bu, bir DateTime Tarih ve saat değerini kültüre özgü bir biçimde ifade eder.Note that there is a difference between a DateTime value, which represents the number of ticks that have elapsed since midnight of January 1, 0001, and the string representation of that DateTime value, which expresses a date and time value in a culture-specific-specific format. Tarih ve saat değerlerini biçimlendirme hakkında daha fazla bilgi için, bkz ToString . yöntemi.For information on formatting date and time values, see the ToString method. Aşağıdaki örnek, bir dizi kültüre özgü biçimdeki kısa tarih ve saat dizesini görüntüler.The following example displays the short date and time string in a number of culture-specific formats.

using namespace System;
using namespace System::Globalization;

void main()
{
   DateTime localDate = DateTime::Now;
   array<String^>^ cultureNames = { "en-US", "en-GB", "fr-FR",
                                    "de-DE", "ru-RU" };

   for each (String^ cultureName in cultureNames) {
      CultureInfo^ culture = gcnew CultureInfo(cultureName);
      Console::WriteLine("{0}: {1}", cultureName,
                         localDate.ToString(culture));
   }
}
// The example displays the following output:
//       en-US: 6/19/2015 10:03:06 AM
//       en-GB: 19/06/2015 10:03:06
//       fr-FR: 19/06/2015 10:03:06
//       de-DE: 19.06.2015 10:03:06
//       ru-RU: 19.06.2015 10:03:06

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      DateTime localDate = DateTime.Now;
      String[] cultureNames = { "en-US", "en-GB", "fr-FR",
                                "de-DE", "ru-RU" };

      foreach (var cultureName in cultureNames) {
         var culture = new CultureInfo(cultureName);
         Console.WriteLine("{0}: {1}", cultureName,
                           localDate.ToString(culture));
      }
   }
}
// The example displays the following output:
//       en-US: 6/19/2015 10:03:06 AM
//       en-GB: 19/06/2015 10:03:06
//       fr-FR: 19/06/2015 10:03:06
//       de-DE: 19.06.2015 10:03:06
//       ru-RU: 19.06.2015 10:03:06

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim localDate = DateTime.Now
      Dim cultureNames() As String = { "en-US", "en-GB", "fr-FR",
                                       "de-DE", "ru-RU" }

      For Each cultureName In cultureNames
         Dim culture As New CultureInfo(cultureName)
         Console.WriteLine("{0}: {1}", cultureName,
                           localDate.ToString(culture))
      Next
   End Sub
End Module
' The example displays the following output:
'    en-US: 6/19/2015 10:03:06 AM
'    en-GB: 19/06/2015 10:03:06
'    fr-FR: 19/06/2015 10:03:06
'    de-DE: 19.06.2015 10:03:06
'    ru-RU: 19.06.2015 10:03:06

Bu özelliğin çözümlenmesi, temel alınan işletim sistemine bağlı olan sistem zamanlayıcıya bağlıdır.The resolution of this property depends on the system timer, which depends on the underlying operating system. 0,5 ile 15 milisaniyelik arasında bir eğilimi gösterir.It tends to be between 0.5 and 15 milliseconds. Sonuç olarak, bir Now döngü içindeki gibi kısa bir zaman aralığındaki özelliğe yinelenen çağrılar aynı değeri döndürebilir.As a result, repeated calls to the Now property in a short time interval, such as in a loop, may return the same value.

NowÖzelliği, performansı ölçmek için sık kullanılır.The Now property is frequently used to measure performance. Ancak, düşük çözünürlüğü nedeniyle, bir sınama aracı olarak kullanım için uygun değildir.However, because of its low resolution, it is not suitable for use as a benchmarking tool. Sınıfı kullanmak daha iyi bir alternatiftir Stopwatch .A better alternative is to use the Stopwatch class.

.NET Framework sürüm 2,0 ' den başlayarak, dönüş değeri DateTime Kind özelliğin döndürdüğü bir özelliktir DateTimeKind.Local .Starting with the .NET Framework version 2.0, the return value is a DateTime whose Kind property returns DateTimeKind.Local.

Şunlara uygulanır

Ayrıca bkz.

• Now
• UtcNow