private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
string[] availableCurrency = CurrencyConverterClass.GetCurrencyTags();
foreach (var currency in availableCurrency)
{
CurrencyListFROM.Items.Add(currency.ToUpper());
CurrencyListTO.Items.Add(currency.ToUpper());
CurrencyListTextBox.Text = CurrencyListTextBox.Text + " " + currency.ToUpper();
}
CurrencyListTextBox.Text = CurrencyListTextBox.Text.Substring(1);
}
private void ButtonConvert_Click(object sender, RoutedEventArgs e)
{
float amount = 1;
string fromCurrency, toCurrency;
bool reverseEUR;
if (Convert.ToString(CurrencyListTO.SelectedItem) == "EUR")
{
fromCurrency = Convert.ToString(CurrencyListTO.SelectedItem);
toCurrency = Convert.ToString(CurrencyListFROM.SelectedItem);
reverseEUR = true;
}
else
{
fromCurrency = Convert.ToString(CurrencyListFROM.SelectedItem);
toCurrency = Convert.ToString(CurrencyListTO.SelectedItem);
reverseEUR = false;
}
if (!string.IsNullOrEmpty(CurrencyAmountTextBox.Text))
{
try { amount = Convert.ToSingle(CurrencyAmountTextBox.Text); }
catch
{
MessageBox.Show("A fatal error has occured !", "Oops !", MessageBoxButton.OK, MessageBoxImage.Error);
CurrencyAmountTextBox.Text = "";
}
}
if (fromCurrency == "EUR" || toCurrency == "EUR")
{
float exchangeRate = CurrencyConverterClass.GetCurrencyRateInEuro(toCurrency);
if (reverseEUR == false)
{
exchangeRate = exchangeRate * amount;
}
else if (reverseEUR == true)
{
exchangeRate = (1 / exchangeRate) * amount;
}
ConvertResultTextBox.Text = Convert.ToString(exchangeRate);
}
else
{
float exchangeRate = CurrencyConverterClass.GetExchangeRate(fromCurrency, toCurrency, Convert.ToSingle(amount));
ConvertResultTextBox.Text = Convert.ToString(exchangeRate);
}
}