asynchronous processing

using System;

using System.Collections.Generic;

using Microsoft.SharePoint.Client;

class Program

{

    static void Main(string[] args)

    {

        AsynchronousAccess asynchronousAccess = new AsynchronousAccess();

        asynchronousAccess.Run();

        Console.WriteLine("Before exiting Main");

        Console.WriteLine();

        Console.WriteLine("In a real application, the application can");

        Console.WriteLine("continue to be responsive to the user.");

        Console.WriteLine();

        Console.ReadKey();

    }

}

class AsynchronousAccess

{

    delegate void AsynchronousDelegate();

    public void Run()

    {

        Console.WriteLine("About to start a query that will take a long time.");

        Console.WriteLine();

        ClientContext clientContext =

            new ClientContext("http://intranet.contoso.com");

        ListCollection lists = clientContext.Web.Lists;

        IEnumerable<List> newListCollection = clientContext.LoadQuery(

            lists.Include(

                list => list.Title));

        AsynchronousDelegate executeQueryAsynchronously =

            new AsynchronousDelegate(clientContext.ExecuteQuery);

        executeQueryAsynchronously.BeginInvoke(

            arg =>

            {

                clientContext.ExecuteQuery();

                Console.WriteLine("Long running query completed.");

                foreach (List list in newListCollection)

                    Console.WriteLine("Title: {0}", list.Title);

            }, null);

    }

}