Stopwatch.Reset Method
Stops time interval measurement and resets the elapsed time to zero.
Namespace: System.Diagnostics
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 Stop to stop the current interval measurement and retain the cumulative elapsed time value. Use Reset to stop any interval measurement in progress and clear the elapsed time value.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.