.NET Framework Class Library
DateTime Constructor (Int64)

Initializes a new instance of the DateTime structure to a specified number of ticks.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
Syntax

Visual Basic (Declaration)
Public Sub New ( _
    ticks As Long _
)
Visual Basic (Usage)
Dim ticks As Long

Dim instance As New DateTime(ticks)
C#
public DateTime(
    long ticks
)
Visual C++
public:
DateTime(
    long long ticks
)
JScript
public function DateTime(
    ticks : long
)

Parameters

ticks
Type: System..::.Int64
A date and time expressed in 100-nanosecond units.
Exceptions

ExceptionCondition
ArgumentOutOfRangeException

ticks is less than DateTime..::.MinValue or greater than DateTime..::.MaxValue.

Remarks

The Kind property is initialized to DateTimeKind..::.Unspecified.

For applications in which portability of date and time data or a limited degree of time zone awareness is important, you can use the corresponding DateTimeOffset constructor.

Examples

The following example demonstrates one of the DateTime constructors.

Visual Basic
' This example demonstrates the DateTime(Int64) constructor.
Imports System
Imports System.Globalization
Imports Microsoft.VisualBasic

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 'Main
End Class 'Sample
'
'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.
'
C#
// 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.

*/
Visual C++
// 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.

*/
Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
See Also

Reference

Tags :


Page view tracker