private void ConvertBtn_Click(object sender, EventArgs e)
{
try
{
IBalanceState fromCurrency = null;
double balanceCount = Convert.ToDouble(fromTxtBx.Text);
if (fromUSDChkBx.Checked && !fromUAHChkBx.Checked && !fromEURChkBx.Checked)
{
fromCurrency = (USDBalanceState)StateFactoryHolder.factory.GetBalanceState("USD");
}
else if (!fromUSDChkBx.Checked && fromUAHChkBx.Checked && !fromEURChkBx.Checked)
{
fromCurrency = (UAHBalanceState)StateFactoryHolder.factory.GetBalanceState("UAH");
}
else if (!fromUSDChkBx.Checked && !fromUAHChkBx.Checked && fromEURChkBx.Checked)
{
fromCurrency = (EURBalanceState)StateFactoryHolder.factory.GetBalanceState("EUR");
}
else
{
throw new Exception();
}
IBalance balance = new Balance(balanceCount, fromCurrency);
if (toUSDChkBx.Checked && !toUAHChkBx.Checked && !toEURChkBx.Checked)
{
balance.ConvertToUSD();
}
else if (!toUSDChkBx.Checked && toUAHChkBx.Checked && !toEURChkBx.Checked)
{
balance.ConvertToUAH();
}
else if (!toUSDChkBx.Checked && !toUAHChkBx.Checked && toEURChkBx.Checked)
{
balance.ConvertToEUR();
}
else
{
throw new Exception();
}
toTxtBx.Text = balance.GetStrValue();
}
catch
{
toTxtBx.Text = "error...";
}
}
