CSMSL.IO.MzTab.MzTabSmallMolecule.GetValue C# (CSharp) Method

        public override string GetValue(string fieldName)
        {
            switch (fieldName)
            {
                case Fields.Identifier:
                    return Identifiers == null ? MzTab.NullFieldText : string.Join("|", Identifiers);
                case Fields.ChemicalFormula:
                    return ChemicalFormula.ToString();
                case Fields.Smiles:
                    return Smiles ?? MzTab.NullFieldText;
                case Fields.InChIKey:
                    return InChIKeys == null ? MzTab.NullFieldText : string.Join("|", InChIKeys);
                case Fields.Description:
                    return Description ?? MzTab.NullFieldText;
                case Fields.ExperimentMZ:
                    return ExperimentalMZ.ToString();
                case Fields.TheoreticalMZ:
                    return TheoreticalMZ.ToString();
                case Fields.Charge:
                    return Charge.ToString();
                case Fields.RetentionTime:
                    return RetentionTimes == null ? MzTab.NullFieldText : string.Join("|", RetentionTimes);
                case Fields.TaxID:
                    return TaxID.ToString();
                case Fields.Species:
                    return Species ?? MzTab.NullFieldText;
                case Fields.Database:
                    return Database ?? MzTab.NullFieldText;
                case Fields.DatabaseVersion:
                    return DatabaseVersion ?? MzTab.NullFieldText;
                case Fields.Reliability:
                    return (Reliability == MzTab.MetabolomicsReliabilityScore.NotSet) ? MzTab.NullFieldText : ((int) Reliability).ToString();
                case Fields.Uri:
                    return Uri == null ? MzTab.NullFieldText : Uri.ToString();
                case Fields.SpectralReference:
                    return SpectralReference ?? MzTab.NullFieldText;
                case Fields.SearchEngine:
                    return SearchEngines == null ? MzTab.NullFieldText : string.Join("|", SearchEngines);
                case Fields.Modifications:
                    return Modifications ?? MzTab.NullFieldText;
            }

            if (fieldName.Contains("["))
            {
                string condensedFieldName;
                List<int> indices = MzTab.GetFieldIndicies(fieldName, out condensedFieldName);

                switch (condensedFieldName)
                {
                    case Fields.BestSearchEngineScores:
                        return GetListValue(_bestSearchEngineScores, indices[0]);
                    case Fields.SearchEngineScorePerMsRun:
                        return GetListValue(_searchEngineScorePerMsRun, indices[0], indices[1]);
                    case Fields.AbundanceAssay:
                        return GetListValue(_abundanceAssays, indices[0]);
                    case Fields.AbundanceStudyVariable:
                        return GetListValue(_abundanceStudyVariables, indices[0]);
                    case Fields.AbundanceStDevStudyVariable:
                        return GetListValue(_abundanceStdevStudyVariables, indices[0]);
                    case Fields.AbudnanceStdErrorStudyVariable:
                        return GetListValue(_abundanceStandardErrorStudyVariables, indices[0]);
                }
            }

            if (fieldName.StartsWith(MzTab.OptionalColumnPrefix))
            {
                return GetOptionalData(fieldName);
            }

            throw new ArgumentException("Unexpected field name: " + fieldName);
        }