Regarding how Async and Await works c#

Question

i saw some post regarding Async and Await usage in this site. few people are saying that Async and Await complete its job on separate background thread means spawn a new bac

Answer 1

Need understand two things: a) async/await use tasks(tasks use thread pool) b) async/await is NOT for parallel work.

Just compile this and look at Id's:

static void Main(string[] args)
    {
        Console.WriteLine("Id main thread is: {0}", Thread.CurrentThread.ManagedThreadId);
        TestAsyncAwaitMethods();
        Console.WriteLine("Press any key to exit...");
        Console.ReadLine();
    }

    public async static void TestAsyncAwaitMethods()
    {
        Console.WriteLine("Id thread (void - 0) is: {0}", Thread.CurrentThread.ManagedThreadId);
        var _value = await LongRunningMethod();
        Console.WriteLine("Id thread (void - 1) is: {0}", Thread.CurrentThread.ManagedThreadId);
    }

    public static async Task LongRunningMethod()
    {
        Console.WriteLine("Id thread (int) is: {0}", Thread.CurrentThread.ManagedThreadId);
        Console.WriteLine("Starting Long Running method...");
        await Task.Delay(1000);
        Console.WriteLine("End Long Running method...");
        return 1;
    }