public async Task <List <HistoryDTO> > getHRatesAsync(string sourceCountryCode, string targetCountryCode = "USD")
{
IDAL dal = new DAL_imp();
List <HistoryDTO> listSource = await dal.getHRatesAsync(sourceCountryCode);
if (!String.Equals(targetCountryCode, "USD"))
{
List <HistoryDTO> listTarget = await dal.getHRatesAsync(targetCountryCode);
for (int i = 0; i < listSource.Count; i++)
{
listSource[i].Currency.Value /= listTarget[i].Currency.Value;
}
}
return(listSource);
}
private async Task <ObservableCollection <HistoryDTO> > abc(string code)
{
return(new ObservableCollection <HistoryDTO>(await dal.getHRatesAsync(code)));
}
