Timer-Konstruktor (Double)

Initialisiert eine neue Instanz der Timer-Klasse und legt die Interval-Eigenschaft auf den angegebenen Zeitraum fest.

Namespace: System.Timers
Assembly: System (in system.dll)

Syntax

'Declaration
Public Sub New ( _
    interval As Double _
)
'Usage
Dim interval As Double

Dim instance As New Timer(interval)

public Timer (
    double interval
)

public:
Timer (
    double interval
)

public Timer (
    double interval
)

public function Timer (
    interval : double
)

Parameter

• interval
  Die Zeit zwischen den Ereignissen in Millisekunden.

Ausnahmen

Ausnahmetyp	Bedingung
ArgumentException	Der Wert des interval-Parameters ist kleiner als 0 (null).

Beispiel

Im folgenden Beispiel wird ein Timer erstellt, der nach 10 Sekunden "Hello World!" in der Konsole anzeigt.

Verwenden Sie für dieses Beispiel den System.Timers-Namespace.

' From command line, compile with /r:System.dll
Imports System
Imports System.Timers

Public Class Timer2
    
    Public Shared Sub Main()
        ' Normally, the timer is declared at the class level, so
        ' that it doesn't go out of scope when the method ends.
        ' In this example, the timer is needed only while Main 
        ' is executing. However, KeepAlive must be used at the
        ' end of Main, to prevent the JIT compiler from allowing 
        ' aggressive garbage collection to occur before Main 
        ' ends.
        '
        ' Create a timer with a ten second interval.
        Dim aTimer As New System.Timers.Timer(10000)

        ' Hook up the event handler for the Elapsed event.
        AddHandler aTimer.Elapsed, AddressOf OnTimedEvent

        ' Only raise the event the first time Interval elapses.
        aTimer.AutoReset = False
        aTimer.Enabled = True
        
        Console.WriteLine("Press the Enter key to exit the program.")
        Console.ReadLine()

        ' Keep the timer alive until the end of Main.
        GC.KeepAlive(aTimer)
    End Sub

    ' Specify what you want to happen when the Elapsed event is 
    ' raised.
    Private Shared Sub OnTimedEvent(source As Object, e As ElapsedEventArgs)
        Console.WriteLine("Hello World!")
    End Sub
End Class

// From command line, compile with /r:System.dll
using System;
using System.Timers;

public class Timer2
{
    public static void Main()
    {
        // Normally, the timer is declared at the class level, so
        // that it doesn't go out of scope when the method ends.
        // In this example, the timer is needed only while Main 
        // is executing. However, KeepAlive must be used at the
        // end of Main, to prevent the JIT compiler from allowing 
        // aggressive garbage collection to occur before Main 
        // ends.
        //
        // Create a timer with a ten second interval.
        System.Timers.Timer aTimer = new System.Timers.Timer(10000);

        // Hook up the event handler for the Elapsed event.
        aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);

        // Only raise the event the first time Interval elapses.
        aTimer.AutoReset = false;
        aTimer.Enabled = true;
 
        Console.WriteLine("Press the Enter key to exit the program.");
        Console.ReadLine();

        // Keep the timer alive until the end of Main.
        GC.KeepAlive(aTimer);
    }
 
    // Specify what you want to happen when the Elapsed event is 
    // raised.
    private static void OnTimedEvent(object source, ElapsedEventArgs e) 
    {
        Console.WriteLine("Hello World!");
    }
}

#using <system.dll>

using namespace System;
using namespace System::Timers;

public ref class Timer2
{
public:
   static void Main()
   {
      // Normally, the timer is declared at the class level, so
      // that it doesn't go out of scope when the method ends.
      // In this example, the timer is needed only while Demo
      // is executing. However, KeepAlive must be used at the
      // end of Demo, to prevent the JIT compiler from allowing 
      // aggressive garbage collection to occur before Demo
      // ends.
      //
      // Create a new Timer with Interval set to 10 seconds.
      System::Timers::Timer^ aTimer = gcnew System::Timers::Timer( 10000 );

      // Hook up the event handler for the Elapsed event.
      aTimer->Elapsed += gcnew ElapsedEventHandler( OnTimedEvent );
      
      // Only raise the event the first time Interval elapses.
      aTimer->AutoReset = false;
      aTimer->Enabled = true;

      Console::WriteLine("Press the Enter key to exit the program.");
      Console::ReadLine();

      // Keep the timer alive until the end of the Demo method.
      GC::KeepAlive(aTimer);
   }

private:
   // Specify what you want to happen when the Elapsed event is 
   // raised.
   static void OnTimedEvent( Object^ /*source*/, ElapsedEventArgs^ /*e*/ )
   {
      Console::WriteLine( "Hello World!" );
   }

};

int main()
{
   Timer2::Main();
}

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

Timer-Klasse
Timer-Member
System.Timers-Namespace
Interval