/// <summary>
/// Start to load data
/// </summary>
public async Task LoadData()
{
StringBuilder str = new StringBuilder();
try
{
var allFavorite = _favoriteStockService.GetAll();
if (allFavorite.Count > 0)
{
allFavorite = allFavorite.OrderBy(x => x.Order).ToList();
List <RealTimeStockItem> realTimeStockList = await _queryService.GetMultipleRealTimeStockAsync(allFavorite);
StockListViewModel.AddStock(realTimeStockList);
}
}
catch (Exception e)
{
str.AppendLine(e.Message);
}
if (str.Length != 0)
{
Dialog.ShowError(str.ToString());
}
}
/// <summary>
/// Seconds
/// </summary>
public void StartPollingUpdate(int interval)
{
UpdateInterval = interval;
cancelToken = new CancellationTokenSource();
// 存放目前執行續的CancelTokenSource
var localCancelToken = cancelToken;
Task.Factory.StartNew(async() =>
{
while (true)
{
try
{
await Task.Delay(UpdateInterval * 1000);
if (localCancelToken.IsCancellationRequested)
{
break;
}
var allFavorite = _favoriteStockService.GetAll();
if (allFavorite.Count > 0)
{
List <RealTimeStockItem> realTimeStockList = await _stockQueryService.GetMultipleRealTimeStockAsync(allFavorite);
foreach (var viewItem in StockList)
{
var newStockValue = realTimeStockList.FirstOrDefault(x => x.Id == viewItem.Id);
if (newStockValue != null)
{
viewItem.Update(newStockValue);
}
#if DEBUG
else //for test
{
Dialog.ShowWarning("找不到符合的資料進行更新，股票名稱[" + viewItem.Name + "]");
}
#endif
}
}
}
catch (Exception e)
{
Dialog.ShowError(e.Message);
}
}
}, localCancelToken.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}