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Executing a DateTime method in Main

I need to make a simple program that asks you to press a button twice, once to start the timer and second time to stop it, then it has to show you the difference in seconds from the moment you pressed these buttons, yet I can't figure out a way to write the code in Main. I think my class Stoper is made properly, but I am not really sure.
I've tried different ways to use ReadKey to assign the starting DateTime to a variable.
class Stoper
{
DateTime czas_zakonczenia;
DateTime czas;
DateTime czas_rozpoczecia;
private DateTime Czas_rozpoczecia
{
get
{
return Czas_rozpoczecia;
}
}
public DateTime Start(DateTime czas_rozpoczecia)
{
return czas_rozpoczecia = DateTime.Now;
}
public DateTime Stop(DateTime czas_zakonczenia)
{
return czas_zakonczenia = DateTime.Now;
}
public void WyswietlCzas()
{
var czas = (Start(czas_rozpoczecia) - Stop(czas_zakonczenia)).TotalSeconds;
}
}
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Kliknij dowolony przycisk gdy chcesz zaczac pomiar czasu.");
Stoper s1 = new Stoper(Start());
}
}

You don't need a custom class for that. You can use the StopWatch class. Try something like this:
static void Main(string[] args)
{
Console.WriteLine("Press any key to start the timer");
Console.ReadKey();
Stopwatch sw = Stopwatch.StartNew();
Console.WriteLine("Timer started. Press any key to stop");
Console.ReadKey();
sw.Stop();
Console.WriteLine("The timer has stopped.");
Console.WriteLine($"Elapsed time is: {sw.Elapsed.TotalSeconds} seconds.");
Console.ReadLine();
}
If you have to use a custom class. There are some irrelevant variables in your class and the logic is also incorrect. You may rewrite your class into something like this: (feel free to translate the variables/method names into your language)
class Stoper
{
public TimeSpan ElapsedTime { get; set; }
private DateTime startDate;
public void Start()
{
startDate = DateTime.Now;
}
public void Stop()
{
ElapsedTime = DateTime.Now - startDate;
}
}
Then, you can use it in the same way the StopWatch class is used above:
static void Main(string[] args)
{
Console.WriteLine("Press any key to start the timer");
Console.ReadKey();
Stoper s1 = new Stoper();
s1.Start();
Console.WriteLine("Timer started. Press any key to stop");
Console.ReadKey();
s1.Stop();
Console.WriteLine("The timer has stopped.");
Console.WriteLine($"Elapsed time is: {s1.ElapsedTime.TotalSeconds} seconds.");
Console.ReadLine();
}

Use the Stopwatch class:
private static void Main()
{
Stopwatch stopWatch = new Stopwatch();
Console.WriteLine("Press any key to start the timer.\n");
Console.ReadKey();
stopWatch.Start();
Console.WriteLine("Press any key to stop the timer.\n");
Console.ReadKey();
stopWatch.Stop();
Console.WriteLine($"Elapsed seconds: {stopWatch.Elapsed.TotalSeconds}");
Console.ReadKey();
}

private static void Main(string[] args)
{
Console.WriteLine("Press any key to Start Timer");
Console.ReadKey();
Console.WriteLine("\nTimer Started");
var startTime = DateTime.Now;
Console.WriteLine("Press any key to Stop Timer");
Console.ReadKey();
var stopTime = DateTime.Now;
var sb = "\n" + (stopTime - startTime);
Console.WriteLine(sb);
}

There are several problems in your code:
This causes a stack overflow. Because you use the property (with the capital C), where you want to use the field (with the small c). C# is case sensitive.
private DateTime Czas_rozpoczecia
{
get
{
return Czas_rozpoczecia;
}
}
You probably want this:
private DateTime Czas_rozpoczecia
{
get
{
return czas_rozpoczecia;
// ^ Small letter
}
}
Or even this:
private DateTime Czas_rozpoczecia => czas_rozpoczecia;
You use an argument with the same name as the field? Then you assign a value (to the argument?) and forget about it.
public DateTime Start(DateTime czas_rozpoczecia)
{
return czas_rozpoczecia = DateTime.Now;
}
You probably want to use it like this. Store the current DateTime in the field. And you should fix this for the Stop method as well.
public DateTime Start()
{
czas_rozpoczecia = DateTime.Now;
}
The difference between two DateTimes is a TimeSpan, and there's no use to store it, since you have all fields already.
public Double WyswietlCzas()
{
return (czas_rozpoczecia - czas_zakonczenia).TotalSeconds;
}
}
Now fix the main code. Use ReadKey to wait for a key. And call the methods using the instance (s1) you just created.
var s1 = new Stoper();
Console.ReadKey();
s1.Start();
Console.ReadKey();
s2.Stop();
And you should be able to figure out how to print the seconds yourself.

c# Null Value Exception inside lock live data collection/aggregation

Lets suppose I have a single class that has two methods OnBarEvent & Update.
Update: subscribes to a continuous stream of data that comes in asynchronously.
OnBarEvent: will send an event out every n minutes. I am using a timer class to keep track of time and then just have SendEvent attached to the timer class event handler. Essentially, this method will be called whenever N minutes pass
The program will receive asynchronous data via OnEvent which will just summarize the data over a period of time. Once a specified time has passed, then the SendEvent will be called
namespace Common.Aggregator
{
public class BaseTimeAggregator
{
//The last time we emitted a consolidated bar
private DateTime? _lastEmit;
//The minimum timespan between creating new bars.
private readonly TimeSpan? _period;
//The working bar used for aggregating the data
private Bar _workingBar;
//The last working bar
private Bar l_workingBar;
//The Start Time
private DateTime StartTime;
private System.Timers.Timer timer;
public new event EventHandler<Bar> DataConsolidated;
private void OnBarEvent(Object source, System.Timers.ElapsedEventArgs e)
{
if (DateTime.Now > StartTime)
{
if (_workingBar != null)
{
//Console.WriteLine("New Bar: {0}", e.SignalTime);
lock (_workingBar)
{
// Fire Bar
var workingTradeBar = _workingBar as Bar;
if(l_workingBar == null)
{
decimal close_ret = workingTradeBar.Close / workingTradeBar.PreClosePrice;
workingTradeBar.Logret = (decimal)Math.Log((double)close_ret);
}
else
{
// PROBLEM: workingTradeBar can be null here for some reason
decimal value = workingTradeBar.Close / l_workingBar.Close;
workingTradeBar.Logret = (decimal) Math.Log((double)value);
}
l_workingBar = workingTradeBar;
DataConsolidated(this, workingTradeBar);
_workingBar = null;
}
}
}
}
public void Update(Tick data)
{
AggregateBar(data);
}
protected void AggregateBar(Tick data)
{
// Create New Bar
if (_workingBar == null)
{
_workingBar = new Bar(data.LastPrice, data.LastPrice, data.LastPrice, data.LastPrice);
_workingBar.PreClosePrice = data.PreClosePrice;
}
lock (_workingBar)
{
// In the case it got accessed in between
if (_workingBar == null)
{
_workingBar = new Bar(data.LastPrice, data.LastPrice, data.LastPrice, data.LastPrice);
_workingBar.PreClosePrice = data.PreClosePrice;
}
// Update Bar
_workingBar.Update(data.DataType, data.LastPrice, data.BidPrice, data.AskPrice,
data.Volume, data.BidSize, data.AskSize);
}
}
return new DateTime(
dateTime.Year,
dateTime.Month,
dateTime.Day,
hours,
minutes,
seconds,
milliseconds,
dateTime.Kind);
}
}
}
The problem I am running in to is that within the lock, when I access the workingTradeBar variable (see commented code above where "PROBLEM"), there are situations where its null and throws a system.null error. I can't figure out how it can be null given I made a check right before I entered the lock. Also, the only place I set it null is in the same method since I want to start summarizing the data after N minutes passed.
Thanks
This is different from the other question because its purely a multi-threading problem/race condition.

Some remarks:
Event handlers should get the current instance from input params, not from the local variable.
If required need store references to all Bars.
Any method that manipulates the Bars should be synchronized.
As alternative the lock-statement can be used ReaderWriterLockSlim.
namespace Common.Aggregator
{
public class BaseTimeAggregator
{
// REMOVE this field
// --> private Bar _workingBar;
private readonly object _lock = new object();
private readonly Dictionary<int, Bar> _barDictionary = new Dictionary<int, Bar>();
private void OnBarEvent(Object source, System.Timers.ElapsedEventArgs e)
{
var bar = (Bar)source;
// Manipulate with the actual instance defined in 'bar'-variable ..
}
public void Update(Tick data)
{
lock (_lock) {
AggregateBar(data);
}
}
public void Smth_method(int barId)
{
lock (_lock) {
var bar = _barDictionary[uniqueBarId];
// ..
}
}
protected void AggregateBar(Tick data)
{
var uniqueBarId = data.{some param that identify bar};
if (_barDictionary.ContainsKey(uniqueBarId)) {
_barDictionary[uniqueBarId].Update(data.DataType, data.LastPrice, data.BidPrice, data.AskPrice, data.Volume, data.BidSize, data.AskSize);
return;
}
var bar = new Bar(data.LastPrice, data.LastPrice, data.LastPrice, data.LastPrice);
bar.PreClosePrice = data.PreClosePrice;
_barDictionary[uniqueBarId] = bar;
}
}
}

Change timer at runtime c#

Iv'e created a timer using dispatcher time :
time = new DispatcherTimer();
time.Interval = new TimeSpan(0, 0, 0, 0, 80);
and I use it for the speed of an object.Each tick the objects moves 10 pixels.
I would like to know how to increase the speed of the object without changing the pixels it moves each tick, meaning I want to make the timer itself faster during run time every 10 seconds or so.
Is there a way I can do it?Ive tried making a variable speed=0 and increasing it each time I count 10 and then
time.Interval = new TimeSpan(0, 0, 0, 0, 80-speed);
but The object stayed in the same speed.So do I have to make my own timer class instead of using the built in dispatcher time, if so how do I do that?or is there another solution for this?

I think that DispatcherTimer is not your best ally for this task. The class is by no means designed to execute actions at precise intervals.
I'll try to better explain myself: even if the DispatcherTimer, as its name suggests, dispatches actions timely and with a great precision, the dispatched actions will be queued and then executed when the underlying GUI thread decides to process them.
Normally, a GUI thread has a resolution of around 8ms (it's an approximation, but I don't think we need to measure this right now)... and you are using a starting Interval of 80ms that is going to decrease over time until it probably goes beyond that tolerance limit of 8ms or so. In the meanwhile, you are also repainting your interface (or part of it) over and over and this impacts the performance and the responsiveness of the GUI even more: if the GUI thread is busy repainting and that requires more than the Interval value to be accomplished, the next dispatched action will be processed only once the GUI thread completes the undergoing task.
If you need a more precise scheduling, avoiding hangings / losses of responsiveness / delayed actions, you need to use a timer class that runs in background like System.Threading.Timer (google for SyncronizationContext, that would be helpful) or System.Timers.Timer.
On the top of that, never play with intervals when showing a change in speed. Work with a fixed interval and increase/decrease the movement "size" in pixels. You should be able to calculate the delta without problems. Just to make things clearer: if I want to slow that the speed of an object doubled, I don't half the timer interval that draws the object, but I double the amount of pixels my object traverses at each step.

using System;
using System.Collections.Generic;
using System.Linq;
namespace CQRS_and_EventSourcing
{
internal class Program
{
//CQRS = command query responsibility segregation
//CQS= command query separation
//COMMAND
public class PersonStroge
{
Dictionary<int, Person> people;
}
public class Person
{
public int UniqueId;
public int age;
EventBroker broker;
public Person(EventBroker broker)
{
this.broker = broker;
broker.Commands += BrokerOnCommands;
broker.Queries += BrokeronQueries;
}
private void BrokeronQueries(object sender, Query query)
{
var ac = query as AgeQuery;
if (ac != null && ac.Target == this)
{
ac.Result = age;
}
}
private void BrokerOnCommands(object sender, Command command)
{
var cac = command as ChangeAgeCommand;
if (cac != null && cac.Target == this)
{
if (cac.Register)
broker.AllEvents.Add(new AgeChangedEvent(this, age, cac.Age));
age = cac.Age;
}
}
public bool CanVote => age >= 16;
}
public class EventBroker
{
//1. All events that happened.
public IList<Event> AllEvents = new List<Event>();
//2. Commands
public event EventHandler<Command> Commands;
//3. Query
public event EventHandler<Query> Queries;
public void Command(Command c)
{
Commands?.Invoke(this, c);
}
public T Query<T>(Query q)
{
Queries?.Invoke(this, q);
return (T)q.Result;
}
public void UndoLast()
{
var e = AllEvents.LastOrDefault();
var ac = e as AgeChangedEvent;
if (ac != null)
{
Command(new ChangeAgeCommand(ac.Target, ac.OldValue) { Register = false });
AllEvents.Remove(e);
}
}
}
public class Query
{
public object Result;
}
public class AgeQuery : Query
{
public Person Target;
}
public class Command : EventArgs
{
public bool Register = true;
}
public class ChangeAgeCommand : Command
{
public Person Target;
//public int TargetId;
public int Age;
public ChangeAgeCommand(Person target, int age)
{
Target = target;
Age = age;
}
}
public class Event
{
//backtrack
}
public class AgeChangedEvent : Event
{
public Person Target;
public int OldValue, NewValue;
public AgeChangedEvent(Person target, int oldValue, int newValue)
{
Target = target;
OldValue = oldValue;
NewValue = newValue;
}
public override string ToString()
{
return $"Age changed from {OldValue} to {NewValue}";
}
}
static void Main(string[] args)
{
var eb = new EventBroker();
var p = new Person(eb);
eb.Command(new ChangeAgeCommand(p, 123));
foreach (var e in eb.AllEvents)
{
Console.WriteLine(e);
}
//int age;
//age = eb.Query<int>(new AgeQuery { Target = p });
//Console.WriteLine(age);
//eb.UndoLast();
//foreach (var e in eb.AllEvents)
//{
// Console.WriteLine(e);
//}
//age = eb.Query<int>(new AgeQuery { Target = p });
//Console.WriteLine(age);
Console.ReadKey();
}
}
}
İf you couldnt make look at this repository;
[1]:https://github.com/kYasinAblay/DNesteruk.Additional.Lectures/blob/master/CQRS_and_EventSourcing/Program.cs

Trying to access a variable globally

I have a maze game and I'm trying to create two Timers at a time.
1st (Exits the game after 300 secs)
t1.Interval = 30000;
t1.Enabled = true;
t1.Elapsed += new ElapsedEventHandler(hiddenTimer);
public static void hiddenTimer(object source, ElapsedEventArgs e)
{
Console.Clear();
Environment.Exit(1);
}
2nd (Displays the time remaining every 1 sec (like a real timer))
t2.Interval = 1000;
t2.Enabled = true;
t2.Elapsed += new ElapsedEventHandler(showTimer);
public static void showTimer(object source, ElapsedEventArgs e)
{
Console.Write(timeLeft);
}
I would want to pass declare timeLeft globally but it says that "An object reference is required for the non-static field, method, or property..."
How would I declare it properly?

By making a static property:
public static Double TimeLeft { get; set; }
This is if you want to Publicliy accessable from your entire context, if you want it private, just change public to private.
Just a side note, the built in Timer doesn't support polling for the remaining time until the next elapse. Either you decrease TimeLeft in each Elapse-event on the 1sec timer or you can have a look at this.
Edit
Here is one way to do it with one timer, first I declare two properties and one constant field that I use, don't bother that they are static, it's just easier to run it as a console application this way.
public static Timer SystemTimer { get; set; }
public static double Elapsed { get; set; }
private const double CycleInterval = 1000;
Then in my Main-method I have the following to initiate my Timer
SystemTimer = new Timer();
SystemTimer.Interval = CycleInterval;
SystemTimer.Enabled = true;
SystemTimer.Elapsed += Cycle;
SystemTimer.Start();
Having this, the Cycle-event handler can look like this:
static void Cycle(object sender, ElapsedEventArgs e)
{
Elapsed += CycleInterval;
if ((Elapsed%5000) == 0.0)
{
Console.WriteLine("5 sec elapsed!");
// Do stuff each 5 sec
}
if ((Elapsed % 10000) == 0.0)
{
Console.WriteLine("10 sec elapsed!");
// Do stuff each 10 sec
}
Console.WriteLine("Elapsed: {0}", Elapsed);
}
You could also have Elapsed being a TimeSpan, but you can refactor this as you like.
Here's my complete source code that I used:
using System;
using System.IO;
using System.Timers;
namespace ConsoleApplication5
{
class Program
{
public static Timer SystemTimer { get; set; }
public static double Elapsed { get; set; }
private const double CycleInterval = 1000;
static void Main(string[] args)
{
SystemTimer = new Timer();
SystemTimer.Interval = CycleInterval;
SystemTimer.Enabled = true;
SystemTimer.Elapsed += Cycle;
SystemTimer.Start();
while (true) ;
}
static void Cycle(object sender, ElapsedEventArgs e)
{
Elapsed += CycleInterval;
if ((Elapsed%5000) == 0.0)
{
Console.WriteLine("5 sec elapsed!");
// Do stuff each 5 sec
}
if ((Elapsed % 10000) == 0.0)
{
Console.WriteLine("10 sec elapsed!");
// Do stuff each 10 sec
}
Console.WriteLine("Elapsed: {0}", Elapsed);
}
}
}
And this is what it looks like when I run it:

First of all, you should declare your timeLeft as a static if you want it to behave like a global variable.
Secondly I'd use one timer and keep track of the time separately for each event:
static DateTime startTime = DateTime.Now;
static DateTime lastTime = DateTime.Now;
In your timer, which should be set to something to give more accuracy like 1/10 of a second, do this:
if (DateTime.Now - lastTime > new TimeSpan(0, 0, 1))
// Update the time here for your 1s clock
lastTime = DateTime.Now;
if (DateTime.Now - startTime > new TimeSpan(0, 0, 300))
// Exit the game
Your timings will be more accurate this way.

Mark it static:
public static int TimeLeft;

Your timeLeft memeber is not static.
Make it static or make showTimer method non static.
Regards.

Alarm clock application in .Net

I'm not really writing an alarm clock application, but it will help to illustrate my question.
Let's say that I have a method in my application, and I want this method to be called every hour on the hour (e.g. at 7:00 PM, 8:00 PM, 9:00 PM etc.). I could create a Timer and set its Interval to 3600000, but eventually this would drift out of sync with the system clock. Or I could use a while() loop with Thread.Sleep(n) to periodically check the system time and call the method when the desired time is reached, but I don't like this either (Thread.Sleep(n) is a big code smell for me).
What I'm looking for is some method in .Net that lets me pass in a future DateTime object and a method delegate or event handler, but I haven't been able to find any such thing. I suspect there's a method in the Win32 API that does this, but I haven't been able to find that, either.

Or, you could create a timer with an interval of 1 second and check the current time every second until the event time is reached, if so, you raise your event.
You can make a simple wrapper for that :
public class AlarmClock
{
public AlarmClock(DateTime alarmTime)
{
this.alarmTime = alarmTime;
timer = new Timer();
timer.Elapsed += timer_Elapsed;
timer.Interval = 1000;
timer.Start();
enabled = true;
}
void timer_Elapsed(object sender, ElapsedEventArgs e)
{
if(enabled && DateTime.Now > alarmTime)
{
enabled = false;
OnAlarm();
timer.Stop();
}
}
protected virtual void OnAlarm()
{
if(alarmEvent != null)
alarmEvent(this, EventArgs.Empty);
}
public event EventHandler Alarm
{
add { alarmEvent += value; }
remove { alarmEvent -= value; }
}
private EventHandler alarmEvent;
private Timer timer;
private DateTime alarmTime;
private bool enabled;
}
Usage:
AlarmClock clock = new AlarmClock(someFutureTime);
clock.Alarm += (sender, e) => MessageBox.Show("Wake up!");
Please note the code above is very sketchy and not thread safe.

Interesting, I've actually come across a very similar issue and went looking for a method in the .Net framework that would handle this scenario. In the end, we ended up implementing our own solution that was a variation on a while loop w/ Thread.Sleep(n) where n gets smaller the closer you get to the desired target time (logarithmically actually, but with some reasonable thresholds so you're not maxing the cpu when you get close to the target time.) Here's a really simple implementation that just sleeps half the time between now and the target time.
class Program
{
static void Main(string[] args)
{
SleepToTarget Temp = new SleepToTarget(DateTime.Now.AddSeconds(30),Done);
Temp.Start();
Console.ReadLine();
}
static void Done()
{
Console.WriteLine("Done");
}
}
class SleepToTarget
{
private DateTime TargetTime;
private Action MyAction;
private const int MinSleepMilliseconds = 250;
public SleepToTarget(DateTime TargetTime,Action MyAction)
{
this.TargetTime = TargetTime;
this.MyAction = MyAction;
}
public void Start()
{
new Thread(new ThreadStart(ProcessTimer)).Start();
}
private void ProcessTimer()
{
DateTime Now = DateTime.Now;
while (Now < TargetTime)
{
int SleepMilliseconds = (int) Math.Round((TargetTime - Now).TotalMilliseconds / 2);
Console.WriteLine(SleepMilliseconds);
Thread.Sleep(SleepMilliseconds > MinSleepMilliseconds ? SleepMilliseconds : MinSleepMilliseconds);
Now = DateTime.Now;
}
MyAction();
}
}

You could simply reset the timer duration each time it fires, like this:
// using System.Timers;
private void myMethod()
{
var timer = new Timer {
AutoReset = false, Interval = getMillisecondsToNextAlarm() };
timer.Elapsed += (src, args) =>
{
// Do timer handling here.
timer.Interval = getMillisecondsToNextAlarm();
timer.Start();
};
timer.Start();
}
private double getMillisecondsToNextAlarm()
{
// This is an example of making the alarm go off at every "o'clock"
var now = DateTime.Now;
var inOneHour = now.AddHours(1.0);
var roundedNextHour = new DateTime(
inOneHour.Year, inOneHour.Month, inOneHour.Day, inOneHour.Hour, 0, 0);
return (roundedNextHour - now).TotalMilliseconds;
}

You could create an Alarm class which has a dedicated thread which goes to sleep until the specified time, but this will use the Thread.Sleep method. Something like:
/// <summary>
/// Alarm Class
/// </summary>
public class Alarm
{
private TimeSpan wakeupTime;
public Alarm(TimeSpan WakeUpTime)
{
this.wakeupTime = WakeUpTime;
System.Threading.Thread t = new System.Threading.Thread(TimerThread) { IsBackground = true, Name = "Alarm" };
t.Start();
}
/// <summary>
/// Alarm Event
/// </summary>
public event EventHandler AlarmEvent = delegate { };
private void TimerThread()
{
DateTime nextWakeUp = DateTime.Today + wakeupTime;
if (nextWakeUp < DateTime.Now) nextWakeUp = nextWakeUp.AddDays(1.0);
while (true)
{
TimeSpan ts = nextWakeUp.Subtract(DateTime.Now);
System.Threading.Thread.Sleep((int)ts.TotalMilliseconds);
try { AlarmEvent(this, EventArgs.Empty); }
catch { }
nextWakeUp = nextWakeUp.AddDays(1.0);
}
}
}

I know it's a bit of an old question, but I came across this when I was looking for an answer to something else. I thought I'd throw my two cents in here, since I recently had this particular issue.
Another thing you can do is schedule the method like so:
/// Schedule the given action for the given time.
public async void ScheduleAction ( Action action , DateTime ExecutionTime )
{
try
{
await Task.Delay ( ( int ) ExecutionTime.Subtract ( DateTime.Now ).TotalMilliseconds );
action ( );
}
catch ( Exception )
{
// Something went wrong
}
}
Bearing in mind it can only wait up to the maximum value of int 32 (somewhere around a month), it should work for your purposes. Usage:
void MethodToRun ( )
{
Console.WriteLine ("Hello, World!");
}
void CallingMethod ( )
{
var NextRunTime = DateTime.Now.AddHours(1);
ScheduleAction ( MethodToRun, NextRunTime );
}
And you should have a console message in an hour.

What about System.Timers.Timer class ? See http://msdn.microsoft.com/en-us/library/system.timers.timer.aspx

I have used this before with great success:
Vb.net:
Imports System.Threading
Public Class AlarmClock
Public startTime As Integer = TimeOfDay.Hour
Public interval As Integer = 1
Public Event SoundAlarm()
Public Sub CheckTime()
While TimeOfDay.Hour < startTime + interval
Application.DoEvents()
End While
RaiseEvent SoundAlarm()
End Sub
Public Sub StartClock()
Dim clockthread As Thread = New Thread(AddressOf CheckTime)
clockthread.Start()
End Sub
End Class
C#:
using System.Threading;
public class AlarmClock
{
public int startTime = TimeOfDay.Hour;
public int interval = 1;
public event SoundAlarmEventHandler SoundAlarm;
public delegate void SoundAlarmEventHandler();
public void CheckTime()
{
while (TimeOfDay.Hour < startTime + interval) {
Application.DoEvents();
}
if (SoundAlarm != null) {
SoundAlarm();
}
}
public void StartClock()
{
Thread clockthread = new Thread(CheckTime);
clockthread.Start();
}
}
I don't know if the c# works, but the vb works just fine.
Usage in VB:
Dim clock As New AlarmClock
clock.interval = 1 'Interval is in hours, could easily convert to anything else
clock.StartClock()
Then, just add an event handler for the SoundAlarm event.