async_await.cs

public static class MyExperiment
    {
        public static void RegularMethod()
        {
            DoSomethingAsync();
            Console.WriteLine("after starting async stuff");
            Thread.Sleep(15000);
        }

        public async static void DoSomethingAsync()
        {
            Console.WriteLine("before calling async method...");
            await DoSomethingSlow(1);
            await DoSomethingSlow(2);
            Console.WriteLine("after calling task.Result");
        }

        public static Task DoSomethingSlow(int i)
        {
            return Task.Factory.StartNew(() =>
            {
                Thread.Sleep(5000);
                Console.WriteLine("{1:MM/dd/yyyy hh:mm:ss.fff tt}: done with {0}", i, DateTime.Now);
            });
        }
    }