public override string AddMathFce(string _columnNameLeft, string _columnNameRight, MathOperatorEnum _operator, bool _addParenthises) { string _retVal = ""; switch (_operator) { case MathOperatorEnum.Plus: _retVal = "[" + _columnNameLeft + "] + [" + _columnNameRight + "]"; break; case MathOperatorEnum.Minus: _retVal = "[" + _columnNameLeft + "] - [" + _columnNameRight + "]"; break; case MathOperatorEnum.Multiple: _retVal = "[" + _columnNameLeft + "] * [" + _columnNameRight + "]"; break; case MathOperatorEnum.Divide: _retVal = "[" + _columnNameLeft + "] / [" + _columnNameRight + "]"; break; default: break; } if (_retVal.Length > 0) { if (_addParenthises) { _retVal = "(" + _retVal + ")"; } } return(_retVal); }