private void ProcessOperatorCommand(string value)
{
try
{
switch (value)
{
case "Clear":
TopInput = "";
OperatorInput = "";
BottomInput = "";
Answer = 0;
ErrorMessage = "";
break;
case "Calculate":
if (!string.IsNullOrEmpty(OperatorInput))
{
switch (OperatorInput)
{
case "+":
Answer = Math.Round(TopInputDecimal() + BottomInputDecimal(), 2);
break;
case "-":
Answer = Math.Round(TopInputDecimal() - BottomInputDecimal(), 2);
break;
case "*":
Answer = Math.Round(TopInputDecimal() * BottomInputDecimal(), 2);
break;
case "/":
Answer = Math.Round(TopInputDecimal() / BottomInputDecimal(), 2);
break;
}
}
else
{
Answer = TopInputDecimal();
}
TopInput = Answer.ToString();
break;
case "+":
case "-":
case "*":
case "/":
BottomInput = "";
OperatorInput = value;
break;
}
}
catch (ArithmeticException e)
{
ErrorMessage = e.Message;
}
catch (Exception e)
{
ErrorMessage = e.Message;
}
}