Timers often play an important role in both client applications and server-based components (including Windows services). Writing effective timer-driven managed code requires a clear understanding of program flow and the subtleties of the .NET threading model. The .NET Framework Class Library provides three different timer classes: System.Windows.Forms.Timer, System.Timers.Timer, and System.Threading.Timer. Each of these classes has been designed and optimized for use in different situations. This article examines the three timer classes and helps you gain an understanding of how and when each class should be used.
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