Use async job to compute : Asynchronous « Thread « C# / CSharp Tutorial

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

using System;
using System.Threading;

public class MainClass
{
    // Declare the delegate for the async call.
    private delegate Decimal Compute( int year );

    // The method that computes the taxes.
    private static Decimal DecimalCompute( int year ) {
        Console.WriteLine( "Computing taxes in thread {0}", Thread.CurrentThread.GetHashCode() );

        Thread.Sleep( 6000 );

        return 4.9M;
    }

    static void Main() {
        Compute work = new Compute(DecimalCompute );
        IAsyncResult pendingOp = work.BeginInvoke( 2004, null, null );


        Thread.Sleep( 3000 );

        Console.WriteLine( "Waiting for operation to complete." );
        Decimal result = work.EndInvoke( pendingOp );

        Console.WriteLine( "Taxes owed: {0}", result );
    }
}

Computing taxes in thread 3
Waiting for operation to complete.
Taxes owed: 4.9