private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
int n = Int32.Parse(inputLabel.Text);
int tmp;
if ((n - 1) % 2 == 0)
{
tmp = n - 2;
}
else
{
tmp = n - 1;
}
for (int i = tmp; i >= 2; i -= 2)
{
if (worker.CancellationPending == true)
{
e.Cancel = true;
break;
}
if (Prim.IsPrim1(i))
{
worker.ReportProgress(i);
break;
}
Thread.Sleep(200);
worker.ReportProgress(i);
}
}
