public void afunction(object o)  {  // do what ever the function is supposed to do.   }  //thread entry code   {  // create an instance of WaitCallback   WaitCallback myCallback = new WaitCallback (afunction);  //add this to the thread pool / queue a task   ThreadPool.QueueUserWorkItem (myCallback);  }

public void afunction(object o)  {  // do what ever the function is supposed to do.   }  //object that will carry the status information

public class anObject  {  }  //thread entry code   {  //create an event object ManualResetEvent aevent = new ManualResetEvent (false);  // create an instance of WaitOrTimerCallback   WaitOrTimerCallback thread_method = new WaitOrTimerCallback (afunction);  // create an instance of anObject   anObject myobj = new anObject();  // decide how thread will perform   int timeout_interval = 100;  // timeout in milli-seconds.   bool onetime_exec = true;  //add all this to the thread pool.   ThreadPool. RegisterWaitForSingleObject (aevent, thread_method, myobj, timeout_interval, onetime_exec);  // raise the event   aevent.Set();  }

// class that will be called by the Timer   public class WorkonTimerReq  {  public void aTimerCallMethod()  {  // does some work }  }  //timer creation block   {  //instantiating the class that gets called by the Timer.   WorkonTimerReq anObj = new WorkonTimerReq () ;  // callback delegate   TimerCallback tcallback = new TimerCallback(anObj. aTimerCallMethod) ;  // define the dueTime and period   long dTime = 20 ;  // wait before the first tick (in ms)   long pTime = 150 ;  // timer during subsequent invocations (in ms)   // instantiate the Timer object   Timer atimer = new Timer(tcallback, null, dTime, pTime) ;  // do some thing with the timer object   ...  //change the dueTime and period of the Timer   dTime=100;  pTime=300;  atimer.Change(dTime, pTime) ;  // do some thing   ...  atimer.Dispose() ;  ...  }