public override ValueEval Evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)
{
ValueEval ve0;
ValueEval ve1;
try
{
ve0 = OperandResolver.GetSingleValue(arg0, srcRowIndex, srcColumnIndex);
ve1 = OperandResolver.GetSingleValue(arg1, srcRowIndex, srcColumnIndex);
}
catch (EvaluationException e)
{
return(e.GetErrorEval());
}
StringBuilder sb = new StringBuilder();
sb.Append(GetText(ve0));
sb.Append(GetText(ve1));
return(new StringEval(sb.ToString()));
}
protected double SingleOperandEvaluate(ValueEval arg, int srcCellRow, int srcCellCol)
{
ValueEval ve = OperandResolver.GetSingleValue(arg, srcCellRow, srcCellCol);
return(OperandResolver.CoerceValueToDouble(ve));
}