# QDSSession Class

Namespace: [PIX.Document](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.htm)  
Assembly: PIX.dll

Use CreateSession to get a DocumentSession

## Inheritance

* System.Object
  * QDSSession

## Syntax

```
public class QDSSession : IXmlSerializable
```

## Constructors

| Name | Description |
| --- | --- |
| [QDSSession()](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.-ctor.htm#PIX_Document_QDSSession__ctor) |  |

## Properties

| Name | Description |
| --- | --- |
| [OpenDocumentResult](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.OpenDocumentResult.htm#PIX_Document_QDSSession_OpenDocumentResult) |  |
| [SessionID](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.SessionID.htm#PIX_Document_QDSSession_SessionID) |  |

## Methods

| Name | Description |
| --- | --- |
| [GetSchema()](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.GetSchema.htm#PIX_Document_QDSSession_GetSchema) |  |
| [ReadXml(XmlReader)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.ReadXml.htm#PIX_Document_QDSSession_ReadXml_System_Xml_XmlReader_) |  |
| [WriteXml(XmlWriter)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.Document.QDSSession.WriteXml.htm#PIX_Document_QDSSession_WriteXml_System_Xml_XmlWriter_) |  |

### Extension Methods

[ApiFilter.FilterFor<T>(T, Nullable<ApiVersion>)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.ApiFiltering.ApiFilter.FilterFor.htm#PIX_ApiFiltering_ApiFilter_FilterFor__1___0_System_Nullable_PIX_ApiVersion__)