.net to program asynchronous programming

Question

i`v was studying asynchronous proging in .net today and I realized that this code should NOT create a new thread, but I see different ThreadId with a call to Thread.CurrentThread.ManagedThreadId.

  static void Main(string[] args)
    {
        Do();
        Console.WriteLine("Main {0}",Thread.CurrentThread.ManagedThreadId);

        Thread.Sleep(400);
    }

    private static async void Do()
    {
        Task<string> task = new StreamReader(@"D:\a.txt").ReadLineAsync();
        string result = await task;
        Console.WriteLine("DO {0}", Thread.CurrentThread.ManagedThreadId);
    }

Thank you all for this.

Answer 1

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