Saving records in database

private int InsertRecord()
    {
        int _retVal = -1;
        try
        {
            int _errorCode = (int)ErrorCodes.NoError;
            string _tblNM = DBStructure.TABLE_ASSET_MASTER;
            
            FieldNames[] _selFlds = new FieldNames[1];
            _selFlds[0].FieldName = DBStructure.ASSET_MASTER_CODE;

            cndCheck[] _whCnd = new cndCheck[2];

            _whCnd[0].FieldName = DBStructure.ASSET_MASTER_CODE;
            _whCnd[0].FieldType = Fieldtypes.Char;
            _whCnd[0].FirstFieldValue = AssetCode.ToString();
            _whCnd[0].ArithmeticOp = ArithmeticOperator.EQUALS;
            _whCnd[0].LogicOp = LogicalOperator.AND;

            _whCnd[1].FieldName = DBStructure.ASSET_MASTER_ACCOUNT_ID;
            _whCnd[1].FieldType = Fieldtypes.Integer;
            _whCnd[1].FirstFieldValue = UserGroupID.ToString();
            _whCnd[1].ArithmeticOp = ArithmeticOperator.EQUALS;
            
             DataSet _dsAsset = _dalAccess.Select(false, _tblNM, true, _selFlds, _whCnd, out _errorCode);

             if (_errorCode == (int)ErrorCodes.NoError)
             {
                 if (_dsAsset.Tables[0].Rows.Count > 0)
                     StatusDescription = GetGlobalResourceObject(ResorceFileName, "AssetExists").ToString();
                 else
                 {
                     RecordValues[] _newRec = new RecordValues[24];

                     _newRec[0].FieldName = DBStructure.ASSET_MASTER_CODE;
                     _newRec[0].FieldType = Fieldtypes.VarChar;
                     _newRec[0].FieldValue = AssetCode;

                     _newRec[1].FieldName = DBStructure.ASSET_MASTER_NAME;
                     _newRec[1].FieldType = Fieldtypes.VarChar;
                     _newRec[1].FieldValue = AssetName;

                     _newRec[2].FieldName = DBStructure.ASSET_MASTER_DESCRIPTION;
                     _newRec[2].FieldType = Fieldtypes.VarChar;
                     _newRec[2].FieldValue = AssetDesc;

                     _newRec[16].FieldName = DBStructure.ASSET_MASTER_INSURANCE_DUE_DATE;
                     _newRec[16].FieldType = Fieldtypes.Integer;
                     _newRec[16].FieldValue = String.IsNullOrEmpty(InsuranceDueDate.ToString()) ? null : InsuranceDueDate.ToString();

                     _newRec[17].FieldName = DBStructure.ASSET_MASTER_FITNESS_CERTIFICATION_DUE_DATE;
                     _newRec[17].FieldType = Fieldtypes.Integer;
                     _newRec[17].FieldValue = String.IsNullOrEmpty(FitnessCertificationDueDate.ToString()) ? null : FitnessCertificationDueDate.ToString();

                     _newRec[18].FieldName = DBStructure.ASSET_MASTER_ROAD_TAX_DUE_DATE;
                     _newRec[18].FieldType = Fieldtypes.Integer;
                     _newRec[18].FieldValue = String.IsNullOrEmpty(RoadTaxDueDate.ToString()) ? null : RoadTaxDueDate.ToString();