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Use async job to compute

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