5 // Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
9 // The docs talk about server timers and such...
12 using System.ComponentModel;
13 using System.Threading;
15 namespace System.Timers
17 [DefaultEventAttribute("Elapsed")]
18 [DefaultProperty("Interval")]
19 public class Timer : Component, ISupportInitialize
24 ISynchronizeInvoke so;
25 ManualResetEvent wait;
27 [Category("Behavior")]
28 [TimersDescription("Occurs when the Interval has elapsed.")]
29 public event ElapsedEventHandler Elapsed;
31 public Timer () : this (100)
35 public Timer (double interval)
45 [Category("Behavior")]
47 [TimersDescription("Indicates whether the timer will be restarted when it is enabled.")]
50 get { return autoReset; }
51 set { autoReset = value; }
54 [Category("Behavior")]
56 [TimersDescription("Indicates whether the timer is enabled to fire events at a defined interval.")]
59 get { return enabled; }
66 Thread t = new Thread (new ThreadStart (StartTimer));
67 t.IsBackground = true;
75 [Category("Behavior")]
77 [RecommendedAsConfigurable(true)]
78 [TimersDescription( "The number of milliseconds between timer events.")]
79 public double Interval
81 get { return interval; }
83 // The doc says 'less than 0', but 0 also throws the exception
85 throw new ArgumentException ("Invalid value: " + interval, "interval");
91 public override ISite Site
93 get { return base.Site; }
94 set { base.Site = value; }
98 [TimersDescriptionAttribute("The object used to marshal the event handler calls issued " +
99 "when an interval has elapsed.")]
100 public ISynchronizeInvoke SynchronizingObject
106 public void BeginInit ()
116 public void EndInit ()
131 protected override void Dispose (bool disposing)
134 base.Dispose (disposing);
137 static void Callback (object state)
139 Timer timer = (Timer) state;
140 if (timer.Elapsed == null)
143 ElapsedEventArgs arg = new ElapsedEventArgs (DateTime.Now);
145 if (timer.so != null && timer.so.InvokeRequired) {
146 timer.so.BeginInvoke (timer.Elapsed, new object [2] {timer, arg});
148 timer.Elapsed (timer, arg);
154 wait = new ManualResetEvent (false);
156 WaitCallback wc = new WaitCallback (Callback);
157 while (enabled && wait.WaitOne ((int) interval, false) == false) {
158 if (autoReset == false)
161 ThreadPool.QueueUserWorkItem (wc, this);
165 ((IDisposable) wait).Dispose ();