private async void btnStartWorker_Click(object sender, RoutedEventArgs e)
{
if (!isTaskRunning)
{
oldTime = DateTimeOffset.Now.ToUnixTimeSeconds();
isTaskRunning = true;
pbRefresh.Value = 0;
btnRefresh.Content = "Cancel";
tbStatus.Text = "Step 1/4: Downloading new item list...";
tbPbMessage.Visibility = Visibility.Hidden;
pbRefresh.Visibility = Visibility.Visible;
tbMaxAge.IsEnabled = false;
ctSource = new CancellationTokenSource();
progress = new Progress <DownloadProgressReportModel>();
progress.ProgressChanged += ReportProgress;
worker = new AsyncUpdateItemDatabase();
try
{
bool finishedWithErrors = await Task.Run(() => worker.DoWork(progress, ctSource.Token));
tbMaxAge.IsEnabled = true;
pbRefresh.Value = 0;
btnRefresh.Content = "Update items";
tbPbMessage.Visibility = Visibility.Visible;
pbRefresh.Visibility = Visibility.Hidden;
tbStatus.Text = "Total Items: " + SqliteDataAccess.CountItems().ToString();
if (finishedWithErrors)
{
tbPbMessage.Text = "Finished with errors! To correct errors, click on the button again!";
}
else
{
tbPbMessage.Text = "If you would like to update item database, please click on the button.";
}
}
catch (OperationCanceledException)
{
btnRefresh.IsEnabled = true;
tbMaxAge.IsEnabled = true;
pbRefresh.Value = 0;
btnRefresh.Content = "Update items";
tbPbMessage.Visibility = Visibility.Visible;
pbRefresh.Visibility = Visibility.Hidden;
tbStatus.Text = "Total Items: " + SqliteDataAccess.CountItems().ToString();
tbPbMessage.Text = "Item update cancelled! To resume or retry, click the button.";
}
isTaskRunning = false;
}
else
{
isTaskRunning = false;
btnRefresh.IsEnabled = false;
ctSource.Cancel();
}
}