public async Task <AsyncDownloadResultModel> DoWork(IProgress <DownloadProgressReportModel> progressSent, CancellationToken cancellationToken)
{
List <FormattedTradesModel> resultData = new List <FormattedTradesModel>();
List <string[]> filteredItems = StaticMethods.GetFilteredItems();
progress = progressSent;
token = cancellationToken;
ItemFiltersModel filters = SqliteDataAccess.LoadItemFilters();
totalItems = filteredItems.Count;
startTime = DateTimeOffset.Now.ToUnixTimeSeconds();
startedItem = 0;
finishedItem = 0;
maxAsync = 0;
List <Task <FormattedTradesModel> > tasks = new List <Task <FormattedTradesModel> >();
while (startedItem < totalItems)
{
token.ThrowIfCancellationRequested();
if (maxAsync < filters.max_async_tasks)
{
maxAsync++;
tasks.Add(Task.Run(() => downloadSite(filteredItems[startedItem])));
}
Thread.Sleep(10);
}
FormattedTradesModel[] results = await Task.WhenAll(tasks);
foreach (FormattedTradesModel model in results)
{
if (model.has_data)
{
resultData.Add(model);
}
}
AsyncDownloadResultModel result = new AsyncDownloadResultModel();
result.item_list = resultData;
result.finished_with_errors = finishedWithErrors;
return(result);
}
private async void btnStartWorker_Click(object sender, RoutedEventArgs e)
{
if (!isTaskRunning)
{
oldTime = DateTimeOffset.Now.ToUnixTimeSeconds();
isTaskRunning = true;
pbRefresh.Value = 0;
tbStatus.Text = "Step 1/2: Initializing refresh...";
btnRefresh.Content = "Cancel";
viewModel.SaveFiltersUponStart();
gridMain.IsEnabled = false;
cbStations.IsEnabled = false;
tbUserargoCapacity.IsEnabled = false;
tbUserAvailableMoney.IsEnabled = false;
ctSource = new CancellationTokenSource();
downloadWorker = new AsyncDownloadWebsites();
calculateWorker = new AsyncCalculateHauling();
progress = new Progress <DownloadProgressReportModel>();
progress.ProgressChanged += ReportProgress;
try
{
AsyncDownloadResultModel downloadedData = await Task.Run(() => downloadWorker.DoWork(progress, ctSource.Token));
ObservableCollection <CalculateTradeModel> trades = await Task.Run(() => calculateWorker.DoWork(progress, ctSource.Token, downloadedData.item_list));
updateTable(trades);
cbStations.IsEnabled = true;
tbUserargoCapacity.IsEnabled = true;
tbUserAvailableMoney.IsEnabled = true;
pbRefresh.Value = 0;
btnRefresh.Content = "Refresh data";
if (downloadedData.finished_with_errors)
{
tbStatus.Text = "Trades refreshed with some errors on " + DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
}
else
{
tbStatus.Text = "Trades refreshed on " + DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
}
}
catch (OperationCanceledException)
{
gridMain.IsEnabled = true;
btnRefresh.IsEnabled = true;
cbStations.IsEnabled = true;
tbUserargoCapacity.IsEnabled = true;
tbUserAvailableMoney.IsEnabled = true;
pbRefresh.Value = 0;
btnRefresh.Content = "Refresh data";
tbStatus.Text = "Refresh cancelled. To begin, please refresh data.";
}
isTaskRunning = false;
}
else
{
isTaskRunning = false;
btnRefresh.IsEnabled = false;
ctSource.Cancel();
}
}