private async Task LoadListAsync()
{
await Task.Run(async() =>
{
XmlSerializer formatter = new XmlSerializer(typeof(ConvertedValueViewModel[]));
var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "listtoconvert.xml");
using (var fs = new StreamReader(path))
{
string baseCurrencyCode = "";
ConvertedValueViewModel[] loadedList = (ConvertedValueViewModel[])formatter.Deserialize(fs);
foreach (ConvertedValueViewModel newCurVM in loadedList)
{
ConvertedValuesList.Add(newCurVM);
if (ConvertedValuesList.Count == 1)
{
baseCurrencyCode = newCurVM.Code;
newCurVM.Rate = 1;
}
else
{
newCurVM.Rate = await RateService.GetRateAsync(baseCurrencyCode, newCurVM.Code);
}
}
}
});
OnPropertyChanged(nameof(ConvertedValuesList));
}
public async void AddCurrency(CurrencyViewModel currencyViewModel)
{
var baseCurrencyCode = ConvertedValuesList.Count > 0 ? ConvertedValuesList[0].Code : currencyViewModel.Code;
var newCurVM = new ConvertedValueViewModel()
{
Rate = await RateService.GetRateAsync(baseCurrencyCode, currencyViewModel.Code),
Code = currencyViewModel.Code,
FlagUri = currencyViewModel.FlagUri,
Value = 0
};
ConvertedValuesList.Add(newCurVM);
OnPropertyChanged(nameof(ConvertedValuesList));
SaveListAsync();
}