public override void Edit()
{
string expression = _sumUpList.Replace(SourceData, "${top}+${bottom}");
expression = _sumUpList.Replace(expression, "${top}+${bottom}");
try
{
string answer = EvaluateExpression(expression);
if (ParameterList[0].GetValueOrDefault().Equals("answer", StringComparison.CurrentCultureIgnoreCase))
{
SourceData = answer;
}
else if (SourceData.Contains("\n"))
{
SourceData = String.Concat(SourceData, "\n", answer);
}
else if (SourceData.Contains("="))
{
SourceData = String.Concat(SourceData, answer);
}
else
{
SourceData = String.Concat(SourceData, "=", answer);
}
}
catch (Exception mathErr)
{
RespondToExe("Error: " + mathErr.Message);
}
}