This documentation is archived and is not being maintained.

Stopwatch.Stop Method

Stops measuring elapsed time for an interval.

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

public void Stop ()
public void Stop ()
public function Stop ()
Not applicable.

In a typical Stopwatch scenario, you call the Start method, then eventually call the Stop method, and then you check elapsed time using the Elapsed property.

The Stop method ends the current time interval measurement. Stopping a Stopwatch that is not running does not change the timer state or reset the elapsed time properties.

When a Stopwatch instance measures more than one interval, the Stop method is equivalent to pausing the elapsed time measurement. A subsequent call to Start resumes measuring time from the current elapsed time value. Use the Reset method to clear the cumulative elapsed time in a Stopwatch instance.

The following example uses the Stopwatch class to implement start, stop, reset, and lap-time buttons in a Windows form application. This code example is part of a larger example provided for the Stopwatch class.

if (stopWatch.IsRunning)
{
    // Stop the timer; show the start and reset buttons.
    stopWatch.Stop();
    buttonStartStop.Text = "Start";
    buttonLapReset.Text = "Reset";
}
else 
{
    // Start the timer; show the stop and lap buttons.
    stopWatch.Start();
    buttonStartStop.Text = "Stop";
    buttonLapReset.Text = "Lap";
    labelLap.Visible = false;
    labelLapPrompt.Visible = false;
}

if (stopWatch.get_IsRunning()) {
    // Stop the timer; show the start and reset buttons.
    stopWatch.Stop();
    buttonStartStop.set_Text("Start");
    buttonLapReset.set_Text("Reset");
}
else {
    // Start the timer; show the stop and lap buttons.
    stopWatch.Start();
    buttonStartStop.set_Text("Stop");
    buttonLapReset.set_Text("Lap");
    labelLap.set_Visible(false);
    labelLapPrompt.set_Visible(false);
}

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

XNA Framework

Supported in: 1.0
Show: