What is the best way to implement a timer

Question

What is the best way to implement a timer  A code sample would be great  For this question   best  is defined as most reliable  least number of misfires  and precise  If I specify an interval of 15 seconds  I want the target method invoked every 15 seconds  not every 10 - 20 seconds  On the other hand  I don t need nanosecond accuracy  In this example  it would be acceptable for the method to fire every 14 51 - 15 49 seconds

User · Answer

Reference ServiceBase to your class and put the below code in the OnStartevent   Constants TimeIntervalValue   1  hour   Ideally you should set this value in config file   StartSendingMails   function name you want to run in the application    protected override void OnStart string   args                           It tells in what interval the service will run each time              Int32 timeInterval   Int32 Parse Constants TimeIntervalValue    60   60   1000              base OnStart args               TimerCallback timerDelegate   new TimerCallback StartSendingMails               serviceTimer   new Timer timerDelegate  null  0  Convert ToInt32 timeInterval

User · Answer

Use the Timer class   public static void Main         System Timers Timer aTimer   new System Timers Timer        aTimer Elapsed    new ElapsedEventHandler OnTimedEvent       aTimer Interval   5000      aTimer Enabled   true       Console WriteLine  Press   q   to quit the sample         while Console Read       q           Specify what you want to happen when the Elapsed event is raised   private static void OnTimedEvent object source  ElapsedEventArgs e          Console WriteLine  Hello World          The Elapsed event will be raised every X amount of milliseconds  specified by the Interval property on the Timer object  It will call the Event Handler method you specify  In the example above  it is OnTimedEvent

User · Answer

It s not clear what type of application you re going to develop  desktop  web  console      The general answer  if you re developing Windows Forms application  is use of   System Windows Forms Timer class  The benefit of this is that it runs on UI thread  so it s simple just define it  subscribe to its Tick event and run your code on every 15 second    If you do something else then windows forms  it s not clear from the question   you can choose System Timers Timer  but this one runs on other thread  so if you are going to act on some UI elements from the its Elapsed event  you have to manage it with  invoking  access

User · Answer

By using System Windows Forms Timer class you can achieve what you need   System Windows Forms Timer t   new System Windows Forms Timer      t Interval   15000     specify interval time as you want t Tick    new EventHandler timer Tick   t Start     void timer Tick object sender  EventArgs e            Call method     By using stop   method you can stop timer   t Stop

[c#] What is the best way to implement a "timer"?

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