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();
}
private async Task SaveListAsync()
{
await Task.Run(() =>
{
XmlSerializer formatter = new XmlSerializer(typeof(ConvertedValueViewModel[]));
var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "listtoconvert.xml");
using (var writer = new StreamWriter(path))
{
var values = new ConvertedValueViewModel[ConvertedValuesList.Count];
for (int i = 0; i < ConvertedValuesList.Count; i++)
{
values[i] = ConvertedValuesList[i];
values[i].Value = 0;
}
formatter.Serialize(writer, values);
}
});
}
public void Convert(ConvertedValueViewModel currencyFrom)
{
if (ConvertedValuesList.Count <= 1)
{
return;
}
if (currencyFrom.Rate == 0)
{
return;
}
foreach (var currency in ConvertedValuesList)
{
if (currency == currencyFrom)
{
continue;
}
currency.Value = currencyFrom.Value / currencyFrom.Rate * currency.Rate;
currency.Value = Math.Round(currency.Value, 7);
if (currency.Value > 0.00001)
{
currency.Value = Math.Round(currency.Value, 5);
}
if (currency.Value > 0.0001)
{
currency.Value = Math.Round(currency.Value, 4);
}
if (currency.Value > 0.001)
{
currency.Value = Math.Round(currency.Value, 3);
}
if (currency.Value > 0.01)
{
currency.Value = Math.Round(currency.Value, 2);
}
currency.OnPropertyChanged(nameof(currency.Value));
}
}