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Timer.Timer() Constructor

Initializes a new instance of the Timer class, and sets all the properties to their initial values.

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

public Timer ()
public Timer ()
public function Timer ()
Not applicable.

The following table shows initial property values for an instance of Timer.

Property

Initial Value

AutoReset

true

Enabled

false

Interval

100 milliseconds

SynchronizingObject

a null reference (Nothing in Visual Basic)

The following code example sets up an event handler for the Timer.Elapsed event, creates a timer, and starts the timer. The event handler displays the SignalTime property each time it is raised.

using System;
using System.Timers;

public class Timer1
{
    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.
        System.Timers.Timer aTimer = new System.Timers.Timer();

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

        // Set the Interval to 2 seconds (2000 milliseconds).
        aTimer.Interval = 2000;
        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!");
    }
}
 

Windows 98, Windows Server 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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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