public void PercentButton()
{
if (String.IsNullOrEmpty(Operator))
{
decimal result = Convert.ToDecimal(FirstOperand.FullPart);
result = (result == 0 ? (decimal)(1f / 100f) : (decimal)(result / 100));
FirstOperand.Equal(result);
}
else
{
decimal result = Convert.ToDecimal(SecondOperand.FullPart);
result = (result == 0 ? (decimal)(1f / 100f) : (decimal)(result / 100));
SecondOperand.Equal(result);
}
NotifyOfPropertyChange(() => Result);
}
public void EqualButton()
{
decimal result;
Expression = Result;
try
{
switch (Operator)
{
case "+":
result = Convert.ToDecimal(FirstOperand.FullPart) + Convert.ToDecimal(SecondOperand.FullPart);
SecondOperand = new Operand();
FirstOperand.Equal(result);
Operator = "";
break;
case "-":
result = Convert.ToDecimal(FirstOperand.FullPart) - Convert.ToDecimal(SecondOperand.FullPart);
SecondOperand = new Operand();
FirstOperand.Equal(result);
Operator = "";
break;
case "*":
result = Convert.ToDecimal(FirstOperand.FullPart) * Convert.ToDecimal(SecondOperand.FullPart);
SecondOperand = new Operand();
FirstOperand.Equal(result);
Operator = "";
break;
case "/":
result = Convert.ToDecimal(FirstOperand.FullPart) / Convert.ToDecimal(SecondOperand.FullPart);
SecondOperand = new Operand();
FirstOperand.Equal(result);
Operator = "";
break;
default:
return;
}
NotifyOfPropertyChange(() => Result);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
