C#

private BackgroundWorker backgroundWorker;

protected override void OnStart(string[] args)
        {
backgroundWorker = new BackgroundWorker();
                backgroundWorker.WorkerSupportsCancellation = true;
                backgroundWorker.WorkerReportsProgress = true;
                backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker_DoWork);
                backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);
                
                backgroundWorker.RunWorkerAsync();
}

private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            
        }

private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {      
        }