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Posted

.NET Scheduled Timer

, 16 Sep 2005 CPOL
A timer that easily supports absolute schedules like run at 4:00 AM every day or at 5:00 PM on Fridays..
ReportTimerTest
bin
Release
ReportTimerTest.exe
ScheduleTimer.dll
App.ico
ScheduleTimer
bin
Release
ScheduleTimer.dll
ScheduledItems
StopTest
App.ico
TimerTest
bin
Release
ScheduleTimer.dll
TimerTest.exe
App.ico
TransClock
bin
Release
ScheduleTimer.dll
TransClock.exe
App.ico
ScheduleTimer.png
TransClock.build
App.ico
App.ico
App.ico
App.ico
ScheduleTimer.png
TransClock.build
App.ico
App.ico
/***************************************************************************
 * Copyright Andy Brummer 2004-2005
 * 
 * This code is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * This code may be used in compiled form in any way you desire. This
 * file may be redistributed unmodified by any means provided it is
 * not sold for profit without the authors written consent, and
 * providing that this notice and the authors name is included. If
 * the source code in  this file is used in any commercial application
 * then a simple email would be nice.
 * 
 **************************************************************************/

using System;
using System.Collections;

namespace Schedule
{
	/// <summary>
	/// This is an empty filter that does not filter any of the events.
	/// </summary>
	public class Filter : IResultFilter
	{
		public static IResultFilter Empty = new Filter();
		private Filter() {}

		public void FilterResultsInInterval(DateTime Start, DateTime End, ArrayList List)
		{
			if (List == null)
				return;
			List.Sort();
		}
	}

	/// <summary>
	/// This causes only the first event of the interval to be counted.
	/// </summary>
	public class FirstEventFilter : IResultFilter
	{
		public static IResultFilter Filter = new FirstEventFilter();
		private FirstEventFilter() {}

		public void FilterResultsInInterval(DateTime Start, DateTime End, ArrayList List)
		{
			if (List == null)
				return;
			if (List.Count < 2)
				return;
			List.Sort();
			List.RemoveRange(1, List.Count-1);
		}
	}

	/// <summary>
	/// This causes only the last event of the interval to be counted.
	/// </summary>
	public class LastEventFilter : IResultFilter
	{
		public static IResultFilter Filter = new LastEventFilter();
		private LastEventFilter() {}

		public void FilterResultsInInterval(DateTime Start, DateTime End, ArrayList List)
		{
			if (List == null)
				return;
			if (List.Count < 2)
				return;
			List.Sort();
			List.RemoveRange(0, List.Count-1);
		}
	}

}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Andy Brummer
Software Developer (Senior) Standard Beagle Studios
United States United States
I'm a web developer, math and physics enthusiast, and all around great guy. I live in Austin TX and love using technology to change people's lives for the better.

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