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using System;
using System.Threading;
using System.Runtime.InteropServices;
class foo {
delegate void foo_delegate ();
static void function () {
Console.WriteLine ("Delegate method");
}
static void async_callback (IAsyncResult ar)
{
Console.WriteLine ("Async callback " + ar.AsyncState);
}
public static void Main () {
foo_delegate d = new foo_delegate (function);
AsyncCallback ac = new AsyncCallback (async_callback);
IAsyncResult ar1 = d.BeginInvoke (ac, "foo");
Console.WriteLine("Waiting");
ar1.AsyncWaitHandle.WaitOne();
Console.WriteLine("Sleeping");
Thread.Sleep(1000);
Console.WriteLine("EndInvoke");
d.EndInvoke(ar1);
Console.WriteLine("Sleeping");
Thread.Sleep(1000);
Console.WriteLine("Main returns");
}
}
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