Pass delegate to deal with the IAsyncResult : Asynchronous « Thread « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Thread
3. Asynchronous

using System;
using System.Threading;

public class MainClass
{
    private delegate Decimal Compute( int year );

    private static Decimal DecimalCompute( int year ) {
        Console.WriteLine( "Computing ");

        Thread.Sleep( 6000 );

        return 6.8M;
    }

    private static void DealWithResult( IAsyncResult ar ) {
        Compute work = (Compute) ar.AsyncState;

        Decimal result = work.EndInvoke( ar );
        Console.WriteLine( "Result: {0}", result );
    }

    static void Main() {
        Compute work = new Compute( DecimalCompute );
        work.BeginInvoke( 2004, new AsyncCallback(DealWithResult),work );

        Console.WriteLine( "Waiting for operation to complete." );
        Thread.Sleep( 8000 );
    }
}