发出连续的哔声，直到在C＃中被打断

Question

I want to make a continuous beep sound in my application until interrupted.

Approach

1. Display a message box with retry cancel button
2. Make beep sound continuously until I press Cancel
3. If a press Retry the beep sound should not stop

I tried this using Console.beep() but it only makes sound once.
Any ideas??

Answer 1

As you know of course , this method has more constructors... you can specify it's frequency and duration :

Console.Beep(100,10000);

Another suggestion for your case is just to loop it according to a boolean variable:

   bool stop = false;

        while (!stop)
        {
            Console.Beep();
        }

Answer 2

Console.Beep(); has two arguments, length and tone.

Use like this: Console.Beep(tone_in_hz, length_in_milliseconds);

You could also create a new thread and a public boolean and then run a while loop, like so:

private void Beeper()
{
    while(makeBeepSound)
    {
        Console.Beep();
    }
}

Answer 3

Try this

   public void Beep()
    {
        if (MessageBox.Show("Message", "Alert", MessageBoxButtons.RetryCancel) == DialogResult.Retry)
        {
                Console.Beep(5000, 5000);
                Beep();
        }
    }

In Form1 load event

    private void Form1_Load(object sender, EventArgs e)
    {
        Beep();
    }

Answer 4

Place Beep() in a loop and start it in a new tread. For instance:

    class Beeper
    {
        private int _gapMiliseconds;
        private bool _stop = false;

        public Beeper(int gapMiliseconds)
        {
            _gapMiliseconds = gapMiliseconds;
        }

        public void Start()
        {
            while (!_stop)
            {
                Console.Beep();
                Thread.Sleep(_gapMiliseconds);
            }
        }

        public void Stop()
        {
            _stop = true;
        }
    }

and a code to start and stop it as a thread.

        Beeper beeper = new Beeper(100);
        Thread thread = new Thread(new ThreadStart(beeper.Start));
        thread.Start();
        Thread.Sleep(5000);
        beeper.Stop();