C#

WebClient webClient = new WebClient();
         
   a = "http://www.borsaitaliana.it/borsa/obbligazioni/mot/obbligazioni-in-euro/dati-completi.html?isin=DE000UB5WF78&lang=it";
         
   string page = webClient.DownloadString(a);

waveSource_DataAvailable

WaveIn waveSource;

waveSource = new WaveIn(this.Handle);

waveSource.DataAvailable += new EventHandler<WaveInEventArgs>(waveSource_DataAvailable);

void waveSource_DataAvailable(object sender, WaveInEventArgs e)
        {
            portReceived.Write(e.Buffer, 0, e.BytesRecorded); // send the voice from mic to the modem
        }

public class PipeSection
{
    public PipeSection(double radius)
    {
        this.Radius = radius;
    }

    public double Radius { get; set; }


    public double Calculate(double Frequency)
    {
        return Frequency * this.Radius;
    }

}

CancellationTokenSource ctr = new CancellationTokenSource();
       List<PipeSection> wn = new List<PipeSection>();

       public MainWindow()
       {
           InitializeComponent();

           PipeSection[] input = { new PipeSection(5), new PipeSection(6), new PipeSection(7) };

           wn.AddRange(input);

           //Calcualte at the frequencies 0,100,2000,3000
           var FreqData = new double[] { 0, 100, 2000, 3000 }.ToObservable<double>();

           FreqData
               //Off the ui thread
               .ObserveOn(Scheduler.Default)
               //Run each thread seperatly
               .SelectMany(x => Task.Run<double>(() => DoCalcualtions(x,wn), ctr.Token))
               //Back to the UI thread
               .ObserveOnDispatcher()
               //Subscribe and start the calcualtions
               .Subscribe(args => {
                                   //Update the progressbar when a thread is completed
                                   pgbProgress.Value += 1;
                                   //Tell me what thread is completed
                                   txtText.Text += Environment.NewLine + args.ToString();
                                   },
                           () => {
                                   //All done, here I could do sorting etc.
                                   txtText.Text += Environment.NewLine + "All done";
                                 }
                           );
       }

       private double DoCalcualtions(double Freq, List<PipeSection> input)
       {
           double result=1;
           for (int i = 0; i < input.Count(); i++)
               result *= input[i].Calculate(Freq);

           return result;
       }