private void FavoritesButtonClicked(object sender, EventArgs e)
{
try
{
Structures.Basic.StationsBasic.StationBasic station = Request.GetStationFromString(stopEntry.Text);
if (station == null)
{
PlatformDependentSettings.ShowMessage(Settings.Localization.UnableToFindStation + ": " + stopEntry.Text);
return;
}
if (StationInfoCached.Select(station.ID) != null)
{
return;
}
var fav = new StationInfoCached(station.ID);
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
Request.CacheDepartureBoardAsync(fav.ConstructNewRequest());
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
favoritesStackLayout.Children.Add(new FavoriteItemContentView(favoritesStackLayout, scrollView, fav, stopEntry));
}
catch
{
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
Request.CheckBasicDataValidity();
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}
}
private static async Task <DepartureBoardResponse> SendDepartureBoardRequestAsync(StationInfoRequest dbRequest, bool forceCache = false)
{
DepartureBoardResponse dbResponse = null;
using (var dbProcessing = new DepartureBoardProcessing())
{
var cached = StationInfoCached.Select(dbRequest.StopID);
if (cached == null || (cached.ShouldBeUpdated || forceCache))
{
try
{
if (!await CheckBasicDataValidity())
{
var results = cached?.FindResultsSatisfyingRequest(dbRequest);
return(results?.Departures.Count == 0 ? null : results);
}
// Process the request immediately so the user does not have to wait until the caching is completed.
dbResponse = await dbProcessing.ProcessAsync(dbRequest, dbRequest.Count == -1?int.MaxValue : Settings.TimeoutDuration);
// Then update the cache.
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
if (cached != null && cached.ShouldBeUpdated && dbRequest.Count != -1 && CanBeCached)
{
Task.Run(async() => cached.UpdateCache(await dbProcessing.ProcessAsync(cached.ConstructNewRequest(), int.MaxValue)));
}
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}
catch (System.Net.WebException)
{
PlatformDependentSettings.ShowMessage(Settings.Localization.UnreachableHost);
}
}
else
{
dbResponse = cached?.FindResultsSatisfyingRequest(dbRequest);
if (dbResponse?.Departures.Count == 0)
{
dbResponse = await dbProcessing.ProcessAsync(dbRequest, Settings.TimeoutDuration);
}
}
}
return(dbResponse);
}
private void addButton_Click(object sender, System.EventArgs e)
{
Structures.Basic.StationsBasic.StationBasic station = Request.GetStationFromString(stationTextBox.Text);
if (station == null || StationInfoCached.Select(station.ID) != null)
{
return;
}
var fav = new StationInfoCached(station.ID);
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
Request.CacheDepartureBoardAsync(fav.ConstructNewRequest());
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
favoritesListBox.Items.Add(fav);
favorites.Add(fav);
}