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Annotation Class

Represents a user annotation in the Microsoft Annotations Framework.

Namespace:  System.Windows.Annotations
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: Not mapped to an xmlns.

public sealed class Annotation : IXmlSerializable
<Annotation .../>

Annotation represents a single annotation with all associated anchoring and content data. An annotation consists of the following main elements.

  • Zero, one, or more Anchors that identify what is being annotated.

  • Zero, one, or more Cargos that contain the user data for the annotation.

  • Zero, one, or more Authors that define who created the annotation.

  • A CreationTime that specifies the date and time when the annotation was created.

  • A LastModificationTime that specifies when the annotation was last updated.

  • A unique annotation Id (a globally unique identifier (GUID)).


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

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0