using System;

 public class BusinessService

    {

        public class Result { public bool Success { get; set; } }

​

        public Result doSomeWork(int i)

        {

            //Long work

            System.Threading.Thread.Sleep(1000);

            return new Result(){Success = true};

        }

        public Result doAnotherWork(int i)

        {

            //Long work

            System.Threading.Thread.Sleep(1000);

            return new Result() {Success = true};

        }

    } 

    class Program

    {

        static void DoStuff()

        {

            var businessService = new BusinessService();

            var res = businessService.doSomeWork(1);

            Console.WriteLine($"Result res : {res.Success}");

            var anotherRes = businessService.doAnotherWork(1);

            Console.WriteLine($"Result anotherRes : {anotherRes.Success}");

            var finalRes = res.Success && anotherRes.Success;

            Console.WriteLine($"Result finalRes : {finalRes}");

        }

        static void Main(string[] args)

        {

            Program.DoStuff();

            Console.ReadLine();

            //1-the goal is to use async await for both methods

            //2-both method should be called in the same time using task

        }

    }

​