Asynchronous Calls: IAsyncResult : Asynchronous « Thread « C# / CSharp Tutorial

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

using System;

delegate void FuncToCall(string s);
class MainClass
{
    
    
    public static void WriteLineCallback(IAsyncResult iar)
    {
        Console.WriteLine("In WriteLineCallback");
        FuncToCall func = (FuncToCall) iar.AsyncState;
        func.EndInvoke(iar);
    }
    
    public static void CallWriteLineWithCallback(string s)
    {
        FuncToCall func = new FuncToCall(Console.WriteLine);
        func.BeginInvoke(s, new AsyncCallback(WriteLineCallback), func);
    }

    public static void Main()
    {
        CallWriteLineWithCallback("Hello There");
        
        System.Threading.Thread.Sleep(1000);
    }
}

Hello There
In WriteLineCallback