Sample Async Await with ContinueWith

Program.cs

class Program
    {
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Task<int> getNumberTask = GetNumberAsync(12);

                Task continuationTask = getNumberTask.ContinueWith(async (numberTask) =>
                {
                    Console.WriteLine("Continuation in progress...");
                    int echo = numberTask.Result;
                    Console.WriteLine($"GetNumberAsync Echo: {echo}");

                    await Task.Delay(2000).ConfigureAwait(false);
                    Console.WriteLine("Coninuation done.");
                });

                Console.WriteLine(getNumberTask == continuationTask ? "getNumberTask == continuationTask" : "getNumberTask != continuationTask");

                Task.WaitAll(getNumberTask, continuationTask);
                Console.WriteLine("Main done.");
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }

            Console.ReadKey();
        }

        public static async Task<int> GetNumberAsync(int echo)
        {
            await Task.Delay(2000).ConfigureAwait(false);
            return echo;
        }
    }