using System;

 using System.Threading;

 class TimerExample

 {

     static void Main()

     {

         // Create an AutoResetEvent to signal the timeout threshold in the

         // timer callback has been reached.

         var autoEvent = new AutoResetEvent(false);

         var statusChecker = new StatusChecker();

         // Create a timer that invokes CheckStatus after one second,

         // and every 1/4 second thereafter.

         Console.WriteLine("{0:h:mm:ss.fff} Creating timer.\n",

                           DateTime.Now);

         var stateTimer = new Timer(statusChecker.CheckStatus,

                                    autoEvent, , );

         // When autoEvent signals, change the period to every half second.

         autoEvent.WaitOne();

         stateTimer.Change(, );

         Console.WriteLine("\nChanging period to .5 seconds.\n");

         // When autoEvent signals the second time, dispose of the timer.

         autoEvent.WaitOne();

         stateTimer.Dispose();

         Console.WriteLine("\nDestroying timer.");

     }

 }

 class StatusChecker

 {

     private int invokeCount;

     private int  maxCount;

     public StatusChecker(int count)

     {

         invokeCount  = ;

         maxCount = count;

     }

     // This method is called by the timer delegate.

     public void CheckStatus(Object stateInfo)

     {

         AutoResetEvent autoEvent = (AutoResetEvent)stateInfo;

         Console.WriteLine("{0} Checking status {1,2}.",

             DateTime.Now.ToString("h:mm:ss.fff"),

             (++invokeCount).ToString());

         if(invokeCount == maxCount)

         {

             // Reset the counter and signal the waiting thread.

             invokeCount = ;

             autoEvent.Set();

         }

     }

 }

 // The example displays output like the following:

 //       11:59:54.202 Creating timer.

 //

 //       11:59:55.217 Checking status  1.

 //       11:59:55.466 Checking status  2.

 //       11:59:55.716 Checking status  3.

 //       11:59:55.968 Checking status  4.

 //       11:59:56.218 Checking status  5.

 //       11:59:56.470 Checking status  6.

 //       11:59:56.722 Checking status  7.

 //       11:59:56.972 Checking status  8.

 //       11:59:57.223 Checking status  9.

 //       11:59:57.473 Checking status 10.

 //

 //       Changing period to .5 seconds.

 //

 //       11:59:57.474 Checking status  1.

 //       11:59:57.976 Checking status  2.

 //       11:59:58.476 Checking status  3.

 //       11:59:58.977 Checking status  4.

 //       11:59:59.477 Checking status  5.

 //       11:59:59.977 Checking status  6.

 //       12:00:00.478 Checking status  7.

 //       12:00:00.980 Checking status  8.

 //       12:00:01.481 Checking status  9.

 //       12:00:01.981 Checking status 10.

 //

 //       Destroying timer.

 using System;

 using System.Threading;

 class TimerExample

 {

     public static int loop_index = ;

     public static AutoResetEvent autoEvent = new AutoResetEvent(false);

     static void Main()

     {

         int loop_count = ;

         // Create an AutoResetEvent to signal the timeout threshold in the

         // timer callback has been reached.

         // Create a timer that invokes CheckStatus after one second,

         // and every 1/4 second thereafter.

         Console.WriteLine("{0:h:mm:ss.fff} Creating timer.\n",

                           DateTime.Now);

         var stateTimer = new Timer(show,

                                    autoEvent, , );

         // When autoEvent signals, change the period to every half second.

         autoEvent.WaitOne();

         stateTimer.Change(, );

         Console.WriteLine("\nChanging period to .5 seconds.\n");

         // When autoEvent signals the second time, dispose of the timer.

         autoEvent.WaitOne();

         stateTimer.Dispose();

         Console.WriteLine("\nDestroying timer.");

     }

     public static void show(Object stateInfo)

     {

         Console.WriteLine("{0:h:mm:ss.fff} Run in Show.\n",

                           DateTime.Now);

         Console.WriteLine(loop_index);

         loop_index = loop_index + ;

         if (loop_index > )

         {

             autoEvent.Set();

         }

     }

 }