//event EventHandler SummaChanged;
void MainWindow_SummaChanged(object sender, EventArgs e)
{
if (sender is ComboBox && (sender as ComboBox).Name == "cbCurrency1" ||
sender is TextBox && (sender as TextBox).Name == "tbSumma1")
{
try
{
summa1 = Math.Round(Int32.Parse(tbSumma1.Text) * CurrencyExtensions.CurrencyRateInRubles((Currency)cbCurrency1.SelectedIndex), 2);
}
catch
{
summa1 = 0.00M;
}
label1.Content = $"{summa1} ₽";
}
else // if (sender is ComboBox && (sender as ComboBox).Name == "cbCurrency2" || sender is TextBox && (sender as TextBox).Name == "tbSumma2")
{
try
{
summa2 = Math.Round(Int32.Parse(tbSumma2.Text) * CurrencyExtensions.CurrencyRateInRubles((Currency)cbCurrency2.SelectedIndex), 2);
}
catch
{
summa2 = 0.00M;
}
label2.Content = $"{summa2} ₽";
}
labelCompare.Content =
summa1 <summa2? "<" :
summa1> summa2 ? ">" :
"==";
}
//public override int GetHashCode()
//{
// return base.GetHashCode();
//}
/// <summary>Вернёт 0, если this==money; вернёт -1, если this меньше money; вернёт 1, если this больше money</summary>
public int CompareTo(Money money)
{
if (money == null)
{
throw new ArgumentNullException();
}
decimal summaInRub = Math.Round(Summa * CurrencyExtensions.CurrencyRateInRubles(Currency), 2);
decimal othersummaInRub = Math.Round(money.Summa * CurrencyExtensions.CurrencyRateInRubles(money.Currency), 2);
return(summaInRub > othersummaInRub ? 1 :
summaInRub < othersummaInRub ? -1 : 0);
}
/// <summary>Возвращает сумму в рублях</summary>
public static Money operator +(Money a, Money b)
{
if (a == null || b == null)
{
return(null);
}
return(new Money
{
Summa = Math.Round(a.Summa * CurrencyExtensions.CurrencyRateInRubles(a.Currency), 2)
+ Math.Round(b.Summa * CurrencyExtensions.CurrencyRateInRubles(b.Currency), 2),
Currency = Currency.RUB
});
}
