private async void AddNewCurrency()
{
IsBusy = true;
if (_context.Currencies.FirstOrDefault(x => x.Name.Equals(
NewCurrencyName, StringComparison.CurrentCultureIgnoreCase)) == null)
{
if (string.IsNullOrEmpty(NewCurrencyName))
{
IsBusy = false;
return;
}
var rest = new YahooXChangeRest();
var foundCurrency = await rest.CheckIfCurrencyExistsAsync(NewCurrencyName, BaseCurrency.Name);
if (foundCurrency == null)
{
new ModernDialog
{
Title = "Error",
Content = "No currency with symbol: " + NewCurrencyName.ToUpper()
}.Show();
NewCurrencyName = String.Empty;
IsBusy = false;
return;
}
var res = foundCurrency.MapToEntity();
_context.Currencies.Add(res);
await _context.SaveChangesAsync();
// adding to an observable collections
Messenger.Default.Send(res, "newCurrencyMsg");
Currencies.Add(res);
}
else
{
new ModernDialog
{
Title = "Error",
Content = "Following currency already exists: " + NewCurrencyName.ToUpper()
}.Show();
}
NewCurrencyName = String.Empty;
IsBusy = false;
}
private async Task UpdateCurrencies()
{
IsBusy = true;
var rest = new YahooXChangeRest();
var currencies = await rest.TakeExchangesAsync(
Currencies.ToListOfString(),
BaseCurrency.Name);
if (currencies == null)
{
new ModernDialog
{
Title = "Error",
Content = "Connection problems"
}.Show();
}
else
{
Currencies.Update(currencies);
}
IsBusy = false;
}
