private void UpdateProgress()
{
_timer.Elapsed -= OnTimer;
_progressBar.Maximum = _totalSize;
_progressBar.Value = _processedSize;
double percents = (_totalSize == 0) ? 0.0 : 100 * _processedSize / (double)_totalSize;
TimeSpan elapsed = DateTime.Now - _begin;
double speed = _processedSize / Math.Max(elapsed.TotalSeconds, 1);
if (speed < 1)
{
speed = 1;
}
TimeSpan left = TimeSpan.FromSeconds((_totalSize - _processedSize) / speed);
_progressText.Text = String.Format("{0:F2}%", percents);
_beginTimeText.Text = String.Format("{1}: {0:mm\\:ss}", elapsed, Lang.MeasurementsElapsed);
_speedText.Text = FormatHelper.BytesFormat(speed) + " / " + Lang.MeasurementsSecondAbbr;
_endTimeText.Text = String.Format("{1}: {0:mm\\:ss}", left, Lang.MeasurementsRemaining);
_timer.Elapsed += OnTimer;
}