BackgroundWorker.MainForm.DoWork C# (CSharp) Method

        private void DoWork(object sender, DoWorkEventArgs args)
        {
            var worker = sender as System.ComponentModel.BackgroundWorker;

            var sw = new Stopwatch();
            sw.Start();
            for (var i = 0; i <= 100000; i++)
            {
                if (i % 500 == 0)
                {
                    // just so we can see it more easily...
                    Thread.Sleep(5);
                    worker.ReportProgress(i / 100000, i);
                }
            }
            sw.Stop();

            args.Result = sw.ElapsedMilliseconds;
        }