---
source_files:
  - Common/DTS.Common.Import/ImportError.cs
  - Common/DTS.Common.Import/ParseProcessor.cs
  - Common/DTS.Common.Import/TsetSetupImportSensorInfo.cs
  - Common/DTS.Common.Import/CsvUtil.cs
  - Common/DTS.Common.Import/ImportNotification.cs
  - Common/DTS.Common.Import/XMLParseProcessor.cs
  - Common/DTS.Common.Import/CalibrationImport.cs
  - Common/DTS.Common.Import/GroupHelper.cs
  - Common/DTS.Common.Import/ImportObject.cs
generated_at: "2026-04-17T15:32:34.821158+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "148f67b9afc6f9fe"
---

# DTS.Common.Import Module Documentation

## 1. Purpose

This module provides the core infrastructure for importing test configuration data into the DTS system. It handles parsing of CSV and XML files containing sensor definitions, calibrations, test setups, groups, hardware configurations, and related metadata. The module centralizes all imported data through the `ImportObject` container, provides progress notification via `IImportNotification`, and includes utilities for calibration processing and group management.

---

## 2. Public Interface

### ImportError.cs

**Enum: `ImportSeverityError`**
```csharp
public enum ImportSeverityError
{
    Critical,
    Error,
    Warning,
    Info
}
```

**Class: `ImportError`**
```csharp
public string Message { get; set; }
public ImportSeverityError Severity { get; set; }
public bool ContinueImportOnError { get; set; } = true;  // defaults to true
```

---

### ParseProcessor.cs

**Class: `ParseProcessor`**

Constructor:
```csharp
public ParseProcessor(ImportObject importObject, IEnumerable<string> fileNames, IEnumerable<IParseVariant> parseVariants)
```

Methods:
```csharp
public ImportObject Process()
```
Iterates through all file names and parse variants, invoking `variant.Parse(ref _importObject)` for each combination. Returns the modified `ImportObject`.

---

### TsetSetupImportSensorInfo.cs

**Class: `TsetSetupImportSensorInfo`** (sealed)

Constructors:
```csharp
public TsetSetupImportSensorInfo(string serialNumber, string isoCode, string isoChannelName,
    string userCode, string userChannelName, string dasSerialNumber, int dasChannelIdx)

public TsetSetupImportSensorInfo(string serialNumber, string isoCode)
```

Properties (all read-only except `GroupType`):
```csharp
public string IsoCode { get; }
public string IsoChannelName { get; }
public string UserCode { get; }
public string UserChannelName { get; }
public string SerialNumber { get; }
public string GroupType { get; set; }  // read-write
public string DASSerialNumber { get; }
public int DASChannelIndex { get; }
```

---

### CsvUtil.cs

**Static Class: `CsvUtil`**

```csharp
public static CsvReader CreateCsvReader(string filename)
```
Creates a `CsvReader` using `CultureInfo.InvariantCulture` with a `StreamReader` for the given filename.

```csharp
public static List<string> ReadFields(CsvReader csvReader, bool readNextLine = true)
```
Reads fields from the CSV reader. If `readNextLine` is true, calls `csvReader.Read()` first. Returns a list of trimmed field values from all columns (index 0 to `ColumnCount - 1`).

---

### ImportNotification.cs

**Class: `ImportStatus`**
```csharp
public string Status { get; set; }
public PossibleStatus PossibleStatus { get; set; }
public ImportExtraStatus ExtraStatus { get; set; }
```

**Interface: `IImportNotification`**
```csharp
Action ImportDone { get; }
Action<List<string>> ReportErrors { get; }
Action<double> SetProgress { get; }
Action<ImportStatus> SetStatus { get; }
```

**Class: `ImportNotification`** (implements `IImportNotification`)

Constructors:
```csharp
public ImportNotification(Action<List<string>> reportErrors, Action<ImportStatus> setStatus, 
                          Action<double> setProgress, Action importDone)

public ImportNotification()  // creates no-op handlers for all actions
```

Properties:
```csharp
public Action<List<string>> ReportErrors { get; private set; }
public Action<ImportStatus> SetStatus { get; private set; }
public Action<double> SetProgress { get; private set; }
public Action ImportDone { get; private set; }
```

---

### XMLParseProcessor.cs

**Class: `XMLParseProcessor`**

Constructor:
```csharp
public XMLParseProcessor(ImportObject importObject, IImportNotification importNotification, 
                         IEnumerable<string> fileNames, Func<bool> isCancelled, bool skipNormalizing)
```

Properties:
```csharp
public List<IUIItems> UIItems { get; set; }
```

Methods:
```csharp
public ImportObject Process()
```
Processes XML files using parsers created by `XmlParserFactory`. Sets status to `ImportExtraStatus.ReadingXML`, calculates progress based on items completed vs. total items to complete.

---

### CalibrationImport.cs

**Class: `CalibrationImport`** (implements `ICalibrationImport`)

```csharp
public SensorCalibration CheckForExcitationCalibration(SensorCalibration sc, double sensitivity, 
    ExcitationVoltageOptions.ExcitationVoltageOption excitation, string EU)
```
Checks if the first calibration record has the specified excitation; if not, adds a new `CalibrationRecord` with the given parameters.

```csharp
public SensorCalibration AddLinearCalRecordIfNeeded(SensorCalibration sc, bool savedIsProportional, bool savedRemoveOffset)
```
If `sc.Records.Records` has exactly one entry, adds a second linear calibration record and restores `IsProportional` and `RemoveOffset` flags.

```csharp
public SensorCalibration AddLinearZeroMethodIfNeeded(SensorCalibration sc, ZeroMethodType zeroMethodType, 
    double zeroMethodStart, double zeroMethodEnd)
```
If `sc.ZeroMethods.Methods` has exactly one entry, adds a second `ZeroMethod` with the specified parameters.

---

### GroupHelper.cs

**Static Class: `GroupHelper`**

```csharp
public static IGroup CreateEmptyGroup()
```
Returns a new `GroupList.Model.Group(true)`.

```csharp
public static void GetTestSensorParameters(out string isoCode, out string isoChannelName, 
    out string userCode, out string userChannelName, ParseParameters pp, SensorData sd, 
    out string dasSerialNumber, out int dasChannelIdx)
```
Extracts sensor parameters, preferring values from `ParseParameters` dictionaries when available.

```csharp
public static IReadOnlyDictionary<string, int> GetDAS(
    Dictionary<string, List<TsetSetupImportSensorInfo>> groupSensorLookupgroupSensorLookup,
    DASHardware[] allDAS)
```
Builds a lookup dictionary mapping DAS serial numbers to DAS IDs.

```csharp
public static int? GetGroupId(TestTestObject testObject, Dictionary<string, int> groupIdMapping, 
    List<TestObject> groupList)
```
Finds the group ID for a test object by traversing group relationships.

```csharp
public static List<string> ReverseChannelOrder(TestTemplate testTemplate, 
    Dictionary<string, string> sensorGroupNameLookup, List<SensorData> sensors)
```
Returns a reversed list of channel order strings in format `{testTemplate.Name}_{groupName}_{comment}`.

```csharp
public static List<SensorData> CleanUneededSensorDataPlaceHolder(
    Dictionary<string, List<SensorCalibration>> calibrationLookup, List<SensorData> sensorList)
```
Removes sensor data entries that are ISO-channel-only placeholders or have invalid default calibrations.

```csharp
public static List<SensorData> NormalizeSensorIds(List<SensorData> sensorList)
```
Normalizes sensor database IDs: existing sensors get their real IDs; new sensors get negative IDs (-2, -3, etc.).

---

### ImportObject.cs

**Class: `ImportObject`**

This is the central data container for imports. Key properties and methods:

**Properties:**
```csharp
public ImportFormats SourceFormat { get; set; } = ImportFormats.NOT_SPECIFIED;
public ImportFileFormat TestSetupImportFileFormat { get; set; } = ImportFileFormat.NoTestSetup;
```

**Format Detection:**
```csharp
public ImportFileFormat GetImportFileFormat()
public static ImportFileFormat GetImportFileFormat(int testSetupCount)
```
Returns `SingleTestSetup`, `MultipleTestSetup`, or `NoTestSetup` based on test setup count.

**Error Management:**
```csharp
public void ClearErrors()
public void AddErrors(IEnumerable<ImportError> d)
public void AddError(ImportError d)
public IEnumerable<ImportError> Errors()
```

**Data Collections (Add/Get methods for each):**
- `Calibrations()` / `AddCalibration(SensorCalibration)` / `AddCalibrations(IEnumerable<SensorCalibration>)`
- `TestSetups()` / `AddTestSetup(TestTemplate)` / `AddTestSetups(IEnumerable<TestTemplate>)` / `ClearTestSetups()`
- `Sensors()` / `AddSensor(SensorData)` / `AddSensors(IEnumerable<SensorData>)` / `ClearSensors()`
- `Groups()` / `AddGroup(TestObject)` / `AddGroups(IEnumerable<TestObject>)`
- `GroupTemplates()` / `AddGroupTemplate(TestObjectTemplate)` / `AddGroupTemplates(IEnumerable<TestObjectTemplate>)`
- `Hardware()` / `AddHardware(DASHardware)` / `AddHardwareList(IEnumerable<DASHardware>)`
- `CustomChannels()` / `AddCustomChannel(MMEPossibleChannels)` / `AddCustomChannels(IEnumerable<MMEPossibleChannels>)`
- `Users()` / `AddUser(User)` / `AddUsers(IEnumerable<User>)`
- `CustomerDetails()` / `LabDetails()` / `TestEngineerDetails()`
- `StaticGroups()` / `AddStaticGroup(IGroup)` / `AddStaticGroups(IEnumerable<IGroup>)`
- `SensorModels()` / `AddSensorModel(SensorModel)` / `AddSensorModels(IEnumerable<SensorModel>)`
- Various MME-related collections: `PhysicalDimensions()`, `CustomPositions()`, `CustomFilterClasses()`, `CustomFineLoc1s()`, `CustomFineLoc2s()`, `CustomFineLoc3s()`, `Directions()`, `CustomMainLocations()`, `TestObjects()`

**Lookup Dictionaries:**
```csharp
public void AssignSensorLookup(Dictionary<string, SensorData> sensorLookup)
public void AddSensorLookup(string serial, SensorData sensorData)
public Sensor