Assembly: System (in system.dll)
A Stopwatch instance calculates and retains the cumulative elapsed time across multiple time intervals, until the instance is reset. Use Reset to stop any current interval measurement in progress and clear the elapsed time value. Use Stop to stop the current interval measurement and retain the cumulative elapsed time value.
The following example illustrates resetting a Stopwatch instance for a button click event in a Windows form application. This code example is part of a larger example provided for the Stopwatch class.
// Reset the stopwatch and the displayed timer value. labelLap.Visible = false; labelLapPrompt.Visible = false; labelTime.Text = "00:00:00.00"; buttonLapReset.Text = "Lap"; stopWatch.Reset();
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
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.