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ExtensionListWithModification Class

Defines the ExtensionListWithModification Class.When the object is serialized out as xml, its qualified name is p:extLst.


Namespace:  DocumentFormat.OpenXml.Presentation
Assembly:  DocumentFormat.OpenXml (in DocumentFormat.OpenXml.dll)

public class ExtensionListWithModification : OpenXmlCompositeElement

The following table lists the possible child types:

  • Extension <p:ext>

[ISO/IEC 29500-1 1st Edition] extLst (Extension List with Modification Flag)

This element specifies the extension list with modification ability within which all future extensions of element type ext are defined. The extension list along with corresponding future extensions is used to extend the storage capabilities of the PresentationML framework. This allows for various new kinds of data to be stored natively within the framework.

[Note: Using this extLst element allows the generating application to store whether this extension property has been modified. end note]

Parent Elements

cm (§19.4.1); cxnSp (§; graphicFrame (§; grpSp (§; handoutMaster (§; hf (§; notes (§; notesMaster (§; ph (§; pic (§; sld (§; sldLayout (§; sldMaster (§; sp (§; spTree (§; timing (§; transition (§

Child Elements


ext (Extension)




mod (Modify)

This attribute specifies whether the data contained within this element has been modified and should thus be processed again by the generating application.

The possible values for this attribute are defined by the W3C XML Schema boolean datatype.

[Note: The W3C XML Schema definition of this element’s content model (CT_ExtensionListModify) is located in §A.3. end note]

© ISO/IEC29500: 2008.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.