Hi!

I try to call the BeginInvoke method of a delegate but I get an Exception
"NotSupportedException" when I
execute the program. Here is the code I'm using it is from the MS
helpsystem.

Thankx Thomas

TMS Technical Management Systems GmbH
www.t-m-s.at

using System;
using System.Threading;

public class AsyncDemo
{
// The method to be executed asynchronously.
public string TestMethod ( int callDuration )
{
Console.WriteLine ( "Test method begins." );

Thread.Sleep ( callDuration );

return "MyCallTime was " + callDuration.ToString ();

}

}

// The delegate must have the same signature as the method

// you want to call asynchronously.

public delegate string AsyncDelegate ( int callDuration );

public class AsyncMain

{

static void Main ( string[] args )

{

// Create an instance of the test class.

AsyncDemo ad = new AsyncDemo();

// Create the delegate.

AsyncDelegate dlgt = new AsyncDelegate ( ad.TestMethod );


// Initiate the asychronous call.

IAsyncResult ar = dlgt.BeginInvoke ( 3000, null, null );

Thread.Sleep ( 0 );

Console.WriteLine ( "Main thread does some work." );

// Call EndInvoke to Wait for the asynchronous call to complete,

// and to retrieve the results.

string ret = dlgt.EndInvoke ( ar );

Console.WriteLine("The call executed on thread with return value \"{0}\".",
ret);

Console.ReadLine ();

}

}

AsyncDelegates are supported only in the few scenarios in
the current version of CF: Sockets and Async. calls to
WebServices.

-Alex

>-----Original Message-----
>Hi!
>
>I try to call the BeginInvoke method of a delegate but I
get an Exception
>"NotSupportedException" when I
>execute the program. Here is the code I'm using it is
from the MS
>helpsystem.
>
>Thankx Thomas
>
>TMS Technical Management Systems GmbH
>www.t-m-s.at
>
>using System;
>using System.Threading;
>
>public class AsyncDemo
>{
> // The method to be executed asynchronously.
> public string TestMethod ( int callDuration )
> {
> Console.WriteLine ( "Test method begins." );
>
> Thread.Sleep ( callDuration );
>
> return "MyCallTime was " + callDuration.ToString ();
>
>}
>
>}
>
>// The delegate must have the same signature as the method
>
>// you want to call asynchronously.
>
>public delegate string AsyncDelegate ( int callDuration );
>
>public class AsyncMain
>
>{
>
>static void Main ( string[] args )
>
>{
>
>// Create an instance of the test class.
>
>AsyncDemo ad = new AsyncDemo();
>
>// Create the delegate.
>
>AsyncDelegate dlgt = new AsyncDelegate ( ad.TestMethod );
>
>
>// Initiate the asychronous call.
>
>IAsyncResult ar = dlgt.BeginInvoke ( 3000, null, null );
>
>Thread.Sleep ( 0 );
>
>Console.WriteLine ( "Main thread does some work." );
>
>// Call EndInvoke to Wait for the asynchronous call to
complete,
>
>// and to retrieve the results.
>
>string ret = dlgt.EndInvoke ( ar );
>
>Console.WriteLine("The call executed on thread with
return value \"{0}\".",
>ret);
>
>Console.ReadLine ();
>
>}
>
>}
>
>
>
>.
>