Creating Accurate Timers in C#
Building reliable and precise timers in C# requires careful consideration. For example, a 15-second timer should ideally trigger within a narrow tolerance, perhaps between 14.5 and 15.5 seconds.
The System.Timers.Timer Class: A Robust Solution
The System.Timers.Timer class offers a superior approach to timer implementation. The following code demonstrates its use:
public static void Main()
{
System.Timers.Timer timer = new System.Timers.Timer();
timer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
timer.Interval = 5000; // 5 seconds
timer.Enabled = true;
Console.WriteLine("Press 'q' to quit.");
while (Console.Read() != 'q') { }
}
// Timer event handler
private static void OnTimedEvent(object source, ElapsedEventArgs e)
{
Console.WriteLine("Timer triggered!");
}
Functionality Explained:
The System.Timers.Timer class fires the Elapsed event at intervals specified by the Interval property (in milliseconds). This example sets the interval to 5000 milliseconds (5 seconds). The OnTimedEvent method executes the desired code each time the event is raised.
This method leverages the operating system's timer mechanisms, making it significantly more precise and dependable than alternative methods like polling or thread sleeping.
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