private void Button_Click_old(object sender, RoutedEventArgs e)
{
progressBar.IsIndeterminate = true;
statusText.Text = "Calculating, please wait...";
var task = Task.Factory.StartNew(() =>
{
var results = PrimesCalculator.GetAllPrimes(1000, 180000, CancellationToken.None, null);
return(results);
});
task.ContinueWith(t =>
{
resultsList.ItemsSource = task.Result;
progressBar.IsIndeterminate = false;
statusText.Text = "Calculation Completed";
}, TaskScheduler.FromCurrentSynchronizationContext());
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
_cts = new CancellationTokenSource();
try
{
var confirm = await GetConfirmationFromUser();
if (!confirm)
{
return;
}
progressBar.Value = 0;
statusText.Text = "Calculating, please wait...";
var pr = new Progress <double>(val => progressBar.Value = val);
resultsList.ItemsSource = await Task.Factory.StartNew(() => PrimesCalculator.GetAllPrimes(1000, 180000, _cts.Token, pr));
statusText.Text = "Calculation Completed";
}
catch (OperationCanceledException)
{
statusText.Text = "Cancelled";
}
catch (Exception)
{
statusText.Text = "Calculation Failed";
}
finally {
progressBar.Value = 0;
_cts = null;
}
}