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copied!<p>Use a <a href="http://msdn.microsoft.com/en-us/library/system.threading.waithandle.aspx" rel="nofollow noreferrer"><code>WaitHandle</code></a></p> <hr> <p>Here's an example:</p> <pre><code>using System; using System.Threading; class ThreadSleeper { int seconds; AutoResetEvent napDone = new AutoResetEvent(false); private ThreadSleeper(int seconds) { this.seconds = seconds; } public void Nap() { Console.WriteLine("Napping {0} seconds", seconds); Thread.Sleep(seconds * 1000); Console.WriteLine("{0} second nap finished", seconds); napDone.Set(); } public static WaitHandle DoSleep(int seconds) { ThreadSleeper ts = new ThreadSleeper(seconds); Thread thread = new Thread(new ThreadStart(ts.Nap)); thread.Start(); return(ts.napDone); } } public class OperationsThreadsWaitingwithWaitHandle { public static void Main() { WaitHandle[] waits = new WaitHandle[2]; waits[0] = ThreadSleeper.DoSleep(8); waits[1] = ThreadSleeper.DoSleep(4); Console.WriteLine("Waiting for threads to finish"); WaitHandle.WaitAll(waits); Console.WriteLine("Threads finished"); } } </code></pre> <hr> <p><strong>Links to check out</strong>:</p> <ul> <li><a href="http://www.java2s.com/Code/CSharp/Thread/ThreadsWaitingwithWaitHandle.htm" rel="nofollow noreferrer">Threads:Waiting with WaitHandle</a></li> <li><a href="http://www.yoda.arachsys.com/csharp/threads/waithandles.shtml" rel="nofollow noreferrer">Jon Skeet's post</a></li> <li><a href="https://stackoverflow.com/questions/990970/difference-between-barrier-in-c-4-0-and-waithandle-in-c-3-0">Difference between Barrier in C# 4.0 and WaitHandle in C# 3.0?</a></li> <li><a href="http://bojordan.com/log/?p=258" rel="nofollow noreferrer">Novice C# threading: WaitHandles</a></li> <li><a href="http://www.codeproject.com/KB/recipes/WaitHandleExceptions.aspx?display=Print" rel="nofollow noreferrer">WaitHandle Exceptions and Work Arounds</a></li> <li><a href="http://ondotnet.com/pub/a/dotnet/2001/08/06/csharp.html?page=4&x-maxdepth=0" rel="nofollow noreferrer">Multithreading with C#</a></li> <li><a href="http://www.developerfusion.com/article/5184/multithreading-in-vbnet/3/" rel="nofollow noreferrer">WaitHandle, AutoResetEvent and ManualResetEvent Classes in VB.Net</a></li> </ul>

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