Extending Windows Forms - lightweight views

using System;

namespace Pvax.App.AsyncMethod
{
	class MainClass
	{
		static void LingeringCallDone(IAsyncResult ar)
		{
			Fixture f = ar.AsyncState as Fixture;
			double d = f.EndLingeringCall(ar);
			Console.WriteLine(d);
		}
		
		static void RunSync()
		{
			Console.WriteLine("Synchronous call:");
			Fixture f = new Fixture();
			DateTime start = DateTime.Now;
			double d = f.LingeringCall(0.0, 0.000000001, 2000000000);
			DateTime stop = DateTime.Now;
			Console.WriteLine(d);
			Console.WriteLine(stop - start);
			Console.WriteLine();
		}
		
		static void RunPoll()
		{
			Console.WriteLine("Asynchronous call with polling:");
			Fixture f = new Fixture();
			DateTime start = DateTime.Now;
			IAsyncResult ar = f.BeginLingeringCall(0.0, 0.000000001, 2000000000, null, null);
			Console.WriteLine("Calcualting in the background...");
			double d = f.EndLingeringCall(ar);
			DateTime stop = DateTime.Now;
			Console.WriteLine(d);
			Console.WriteLine(stop - start);
			Console.WriteLine();
		}
		
		static void RunCallback()
		{
			Console.WriteLine("Asynchronous call with callback:");
			double d;
			Fixture f1 = new Fixture();
			
			IAsyncResult ar1 = f1.BeginLingeringCall(0.0, 0.000000001, 2000000000, null, null);
			Console.WriteLine("Computing...");
			f1.BeginLingeringCall(10.0, 0.000000001, 1000000, new AsyncCallback(LingeringCallDone), f1);
			d = f1.EndLingeringCall(ar1);
			Console.WriteLine(d);
			Console.WriteLine();
		}
		
		public static void Main(string[] args)
		{
			RunSync();
			RunPoll();
			RunCallback();
		}
	}
}