public static CurrencyCalculator getInstance()
{
if (instance == null)
{
instance = new CurrencyCalculator();
}
return(instance);
}
private void Button_Clicked(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(FirstCurrency) || String.IsNullOrEmpty(SecondCurrency))
{
DisplayAlert("Ошибка", "Выберите валюты", "OK");
}
else
{
CurrencyCalculator calculator = CurrencyCalculator.getInstance();
calculator.FirstCurrency = FirstCurrency;
calculator.SecondCurrency = SecondCurrency;
Navigation.PushModalAsync(new Page1(FirstCurrency, SecondCurrency));
}
}
private void Button_Clicked(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(entry.Text))
{
DisplayAlert("Ошибка", "Введите номинал", "OK");
}
if (Convert.ToInt32(entry.Text) < 0)
{
DisplayAlert("Ошибка", "Ddtlbnt положительное число", "OK");
}
else
{
CurrencyCalculator calculator = CurrencyCalculator.getInstance();
calculator.Value = Value;
float reponse = calculator.Calculate();
result.Text = Convert.ToString(reponse);
}
}
private async void Connect()
{
CurrencyCalculator calculator = CurrencyCalculator.getInstance();
await calculator.ConnectToServerAsync();
}