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Benefits of using async and keyword expectations

I am new to using asynchronous methods in C #. I read that these keywords asyncalso awaithelp to make the program more susceptible, asynchronizing some methods. I have this snippet:

First way

    public static void Main()
    {
        Console.WriteLine("Hello!! welcome to task application");
        Console.ReadKey();
        Task<string> ourtask = Task.Factory.StartNew<string>(() =>
        {
            return "Good Job";
        });
        ourtask.Wait();
        Console.WriteLine(ourtask.Result);
        Console.ReadKey();
    }

Second way

 public static void Main()
        {
            Launch();
        }
        public static async void Launch()
        {
            Console.WriteLine("Hello!! welcome to task application");
            Console.ReadKey();
            Console.WriteLine(await GetMessage());
            Console.ReadKey();
        }

        public static Task<string> GetMessage()
        {
            return Task.Factory.StartNew<string>(() =>
                {
                    return "Good Job";
                });
        }

I need to know:

  • Is there a difference between the two implementations (in the concept of parallelism)?

  • What are the benefits of using keywords asyncand awaitif I can just create a task and wait for it to complete?

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3 answers

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    public static void Main()
    {
        Launch();
    }
    public static async void Launch()
    {
        Console.WriteLine("Hello!! welcome to task application");
        Console.ReadKey();
        Console.WriteLine(await GetMessage());
        Console.ReadKey();
    }

    public static Task<string> GetMessage()
    {
        return Task.Factory.StartNew<string>(() =>
            {
                return "Good Job";
            });
    }

:

    public static void Main()
    {
        Launch();
    }
    public static async void Launch()
    {
        Console.WriteLine("Hello!! welcome to task application");
        Console.ReadKey();
        return  Task.Factory.StartNew(() => GetMessage())
            .ContinueWith((t) => 
                  {
                     Console.WriteLine(t.Result)
                     Console.ReadKey();
                  });
    }

    public static Task<string> GetMessage()
    {
        return Task.Factory.StartNew<string>(() =>
            {
                return "Good Job";
            });
    }

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