<div>
hi genius, 
 
i like your idea about making the task scheduler call the event but how do i go about doing something like that, &nbsp;and what would i need to do 

</div>

<div>
One approach is to use a System.Timers.Timer. &nbsp;You can figure out how many milliseconds there are between Now and the event's scheduled time. &nbsp;Set the timer's interval to that number of milliseconds, and when the timer's Elapsed event fires run your event. 
 

<pre><code class="code-10 nolinks" id="code-20-35761754-1">using System;
using System.Timers;

class Program
{
	// This doesn't apply to your schedule event/timer question
	// I'm just using the ManualResetEvent to force this console
	// application example to wait until the event fires before
	// exiting
	static System.Threading.ManualResetEventSlim wait = new System.Threading.ManualResetEventSlim(false);
	
	static void Main(string[] args)
	{
		// Create a timer
		Timer timer = new Timer();
		// Turn off auto-reset (we only want it to fire once)
		timer.AutoReset = false;
		// Subscribe to it's elapsed event
		timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);

		// Prompt for a date/time
		Console.Write(&quot;Enter a date &amp; time (mm/dd/yyyy HH:MM:SS AM/PM): &quot;);
		string scheduleTimeString = Console.ReadLine();

		// Convert the string into a datetime object
		DateTime scheduleTime = DateTime.Parse(scheduleTimeString);

		// Figure out how many milliseconds between now
		// and the event scheduled time
		double millisecondsToWait = (scheduleTime - DateTime.Now).TotalMilliseconds;

		// Set the timer to wait that many milliseconds and start it
		timer.Interval = millisecondsToWait;
		timer.Start();

		Console.Write(&quot;Waiting for event scheduled at {0}...&quot;, scheduleTime);

		// This just suspends the program until wait.Set() is called
		// in timer_Elapsed()
		wait.Wait();

		Console.Write(&quot;Press any key to exit...&quot;);
		Console.ReadKey();
	}

	static void timer_Elapsed(object sender, ElapsedEventArgs e)
	{
		Console.WriteLine(&quot;\r\nScheduled Event Fired: {0}\r\n&quot;, DateTime.Now);
		wait.Set();
	}

}
</code></pre>
</div>

<div>
Of course, you can wrap that timer code in a class to make using it simpler: 
 
Use: 

<pre><code class="code-10 nolinks" id="code-20-35761905-1">static bool exitLoop = false;

static void Main(string[] args)
{
	Console.Write(&quot;Enter a date &amp; time (mm/dd/yyyy hh:mm:ss AM/PM): &quot;);
	string eventDateTimeStr = Console.ReadLine();

	ScheduledEvent scheduledEvent = new ScheduledEvent(eventDateTimeStr);
	scheduledEvent.EventFired += new EventHandler(scheduledEvent_EventFired);
	scheduledEvent.Start();

	do
	{
		Console.WriteLine(&quot;{0} seconds remaining...&quot;, scheduledEvent.TimeRemaining.TotalSeconds);
		System.Threading.Thread.Sleep(999);
	} while (!exitLoop);

	Console.Write(&quot;Press any key to exit...&quot;);
	Console.ReadKey();
}

static void scheduledEvent_EventFired(object sender, EventArgs e)
{
	Console.WriteLine(&quot;\r\nThe event fired at: {0}\r\n&quot;, DateTime.Now);
	exitLoop = true;
}
</code></pre>
 
The ScheduledEvent class: 

<pre><code class="code-10 nolinks" id="code-20-35761905-2">public class ScheduledEvent
{
	private DateTime? _eventTime = null;
	private System.Timers.Timer timer;

	public event EventHandler EventFired;

	public ScheduledEvent()
	{
		timer = new System.Timers.Timer();
		timer.AutoReset = false;
		timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
	}

	public ScheduledEvent(DateTime EventDateTime) : this()
	{
		this.EventDateTime = EventDateTime;
	}

	public ScheduledEvent(string EventDateTimeString) : this()
	{
		DateTime dt;
		if (!DateTime.TryParse(EventDateTimeString, out dt))
			throw new FormatException(&quot;EventDateTimeString is not a recognized format for date and time.&quot;);
		this.EventDateTime = dt;
	}

	protected virtual void OnEventFired(EventArgs e)
	{
		if (EventFired != null)
			EventFired(this, e);
	}

	public DateTime EventDateTime
	{
		get
		{
			if (!_eventTime.HasValue)
				throw new Exception(&quot;The EventDateTime property has not been set.&quot;);
			else
				return _eventTime.Value;
		}

		set
		{
			if (value &lt;= DateTime.Now)
				throw new ArgumentException(&quot;The EventDateTime value must occur in the future.&quot;);
			else
				_eventTime = value;
		}
	}

	public TimeSpan TimeRemaining
	{
		get
		{
			if (!_eventTime.HasValue)
				throw new Exception(&quot;The EventDateTime property has not been set.&quot;);
			else
				return _eventTime.Value - DateTime.Now;
		}
	}

	public void Start()
	{
		if (_eventTime &lt;= DateTime.Now)
			throw new Exception(&quot;The ScheduledEvent's EventDateTime property occurs in the past.&quot;);

		double millisecondsToEvent = (_eventTime.Value - DateTime.Now).TotalMilliseconds;
		timer.Interval = millisecondsToEvent;
		timer.Start();
	}

	public void Stop()
	{
		timer.Stop();
	}

	private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
	{
		OnEventFired(new EventArgs());
	}
}
</code></pre>
</div>

<div>
One other thing...the timer's Elapsed event is raised in a separate thread, which means you'll have problems if you're using the ScheduledEvent in a Forms application, and you try to access parts of the form inside the EventFired event. 
 
The way to solve that problem is to set the SynchronizingObject property of the timer to an object (e.g. a Form for example) so then the Timer's Elapsed (and consequently the ScheduledEvent's EventFired) event will be raised in the same thread the form is in. 
 
This slightly modified ScheduledEvent class just exposes the timer's SynchronizingObject property: 
 

<pre><code class="code-10 nolinks" id="code-20-35761953-1">public class ScheduledEvent
{
	private DateTime? _eventTime = null;
	private System.Timers.Timer timer;

	public event EventHandler EventFired;

	public ScheduledEvent()
	{
		timer = new System.Timers.Timer();
		timer.AutoReset = false;
		timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
	}

	public ScheduledEvent(DateTime EventDateTime) : this()
	{
		this.EventDateTime = EventDateTime;
	}

	public ScheduledEvent(string EventDateTimeString) : this()
	{
		DateTime dt;
		if (!DateTime.TryParse(EventDateTimeString, out dt))
			throw new FormatException(&quot;EventDateTimeString is not a recognized format for date and time.&quot;);
		this.EventDateTime = dt;
	}

	protected virtual void OnEventFired(EventArgs e)
	{
		if (EventFired != null)
			EventFired(this, e);
	}

	public ISynchronizeInvoke SynchronizingObject
	{
		get { return timer.SyncrhonizingObject; }
		set { timer.SynchronizingObject = value; }
	}
	
	public DateTime EventDateTime
	{
		get
		{
			if (!_eventTime.HasValue)
				throw new Exception(&quot;The EventDateTime property has not been set.&quot;);
			else
				return _eventTime.Value;
		}

		set
		{
			if (value &lt;= DateTime.Now)
				throw new ArgumentException(&quot;The EventDateTime value must occur in the future.&quot;);
			else
				_eventTime = value;
		}
	}

	public TimeSpan TimeRemaining
	{
		get
		{
			if (!_eventTime.HasValue)
				throw new Exception(&quot;The EventDateTime property has not been set.&quot;);
			else
				return _eventTime.Value - DateTime.Now;
		}
	}

	public void Start()
	{
		if (_eventTime &lt;= DateTime.Now)
			throw new Exception(&quot;The ScheduledEvent's EventDateTime property occurs in the past.&quot;);

		double millisecondsToEvent = (_eventTime.Value - DateTime.Now).TotalMilliseconds;
		timer.Interval = millisecondsToEvent;
		timer.Start();
	}

	public void Stop()
	{
		timer.Stop();
	}

	private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
	{
		OnEventFired(new EventArgs());
	}
}
</code></pre>
 
Then you could use it in a form without issue so long as you set the SynchronizingObject property... 

<pre><code class="code-10 nolinks" id="code-20-35761953-2">public class MyForm : Form
{
	ScheduledEvent schEvent;
	
	public MyForm()
	{
		InitializeComponent();
		schEvent = new ScheduledEvent();
		schEvent.SynchronizingObject = this;
	}
}
</code></pre>
</div>

<div>
This project provides a single assembly wrapper for &nbsp;of Task Scheduler found in all Microsoft operating systems 
<a href="http://taskscheduler.codeplex.com/" rel="ugc">http://taskscheduler.codeplex.com/</a> 

</div>

<div>
I wouldn't bother writing a service - I think it would make more sense to just use the Windows Task Scheduler. &nbsp;That link that dj_alik posted (<a href="http:#a35762568" rel="ugc">http:#a35762568</a>) looks very promising - no sense re-inventing the wheel!
</div>

<div>
HI! 
 
1. Create an C# Application to send email etc 
2. There is Scheduled Task in Window OS 
&nbsp; &nbsp; Where you can set your application to run 
&nbsp; &nbsp; Either daily, weekly, &nbsp;every one hour etc. 
 
It's easy to handle as your exe just care about your Business logic. 
And With Windiws Scheduler You can enable, disable your exe 
and set the time appropriately without worrying. 
 
Thanks!
</div>

<div>
@navneethegde 
 
Scheduled Tasks were already suggested - a couple times.
</div>

<div>
<div class="indent">
&gt;&gt; i like your idea about making the task scheduler call the event but how do i go about doing something like that, &nbsp;and what would i need to do
</div>
 
Sorry, I misread your comment earlier! :) 
 
Write a separate program that does the notification (e.g. sends an e-mail), or write code in your main program to check the command line arguments for something like &quot;/notify&quot; - if the command line argument is present don't really startup, just send notifications. If the command line argument isn't present, startup normally. 
 
In the Control Panel on your computer (and/or in Administrative Tools) you should find &quot;Scheduled Tasks&quot; or &quot;Task Scheduler&quot; which will let you schedule your notification program to run on a schedule - e.g. on 5/30/2011 at 9:00 AM; or every Tuesday at 5:00 PM; or every 15 minutes (it's pretty flexible). 
 
If you want to be able to setup the schedule from within your program (i.e. so that someone using your program doesn't have to setup the schedule themselves, the program will do it for them), take a look at dj_alik's excellent comment: <a href="http:#a35762568" rel="ugc">http:#a35762568</a>
</div>

<div>
Starlitt551, 
I was told creating a windows service which seem to be the right way to go. The reminder is trigger via date from a table. Give how I would use a service to deal with this 
 

</div>

<div>
all of you guys have given me an idea how to approach what i want to do. &nbsp;thanks much
</div>

<div>
<div class="content wysiwyg-content">
Is anyone out their know how to create schedule event using c# in a desktop application. &nbsp;i would like to send a notice to a few people when a specific date and time is reached automatically from my desktop application
</div>
</div>

Is anyone out their know how to create schedule event using c# in a desktop application.  i would like to send a notice to a few people when a specific date and time is reached automatically from my desktop application

create a desktop application event schedule using c#

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