private void SendProgress(ProgressStateEnum state, long current, long max, DateTime start)
{
int progress = (int)(((double)current / (double)max) * 100.0);
if (m_LastProgress != progress)
{
TimeSpan elapsedtime = DateTime.UtcNow.Subtract(start);
double bytesPerSec = (double)current / elapsedtime.TotalSeconds;
if (OnProgress != null)
{
OnProgress.BeginInvoke(this, new ProgressEventArgs(state, progress, elapsedtime, (float)bytesPerSec), null, null);
}
m_LastProgress = progress;
}
}