[ C# ] Delegation and Aschronous method calling.

using System;
using System.Threading;

namespace OperationType
{
public delegate int AddtionSubtration( int a, int b );

public class Delegation
{
public Delegation()
{
this.DelegationChecker();
}
public bool DelegationChecker(){
Console.WriteLine("Scheduling Operation.\n--------------------");
AddtionSubtration addtionSubtration= new AddtionSubtration( this.Add );
Console.WriteLine( "Normal Operation," );
Console.WriteLine( " {0} ", addtionSubtration(2,3) );

binaryOperation= new AddtionSubtration( this.Add );
IAsyncResult iAsyncResult= addtionSubtration.BeginInvoke( 2, 3, null, null );
if( iAsyncResult.IsCompleted )
{
Console.WriteLine("Calling Aschronous ....");
Console.WriteLine("Aschronous {0}", addtionSubtration.EndInvoke( iAsyncResult ));
}
else{
Console.WriteLine("Thread is not on Schedule!!!");
System.Threading.WaitHandle waitHandle= iAsyncResult.AsyncWaitHandle;
if( waitHandle.WaitOne( 300, false ) )
if( iAsyncResult.IsCompleted )
Console.WriteLine("Ashchronous {0}", addtionSubtration.EndInvoke( iAsyncResult ) );
}
return true;
}
public int Add(int a, int b){
System.Threading.Thread.Sleep( 300 );
return (a+b);
}
public int Sub(int a, int b){
return (b-a);
}
}
}