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XObject.Annotation Method (Type)

Gets the first annotation object of the specified type from this XObject.

Namespace:  System.Xml.Linq
Assembly:  System.Xml.Linq (in System.Xml.Linq.dll)

'Declaration
Public Function Annotation ( _
	type As Type _
) As Object

Parameters

type
Type: System.Type

The Type of the annotation to retrieve.

Return Value

Type: System.Object
The Object that contains the first annotation object that matches the specified type, or Nothing if no annotation is of the specified type.

The following example adds an annotation to an XElement. It then retrieves the annotation, specifying the type to retrieve.

Public Class MyAnnotation
    Private _tag As String

    Property Tag() As String
        Get
            Return Me._tag
        End Get
        Set(ByVal Value As String)
            Me._tag = Value
        End Set
    End Property

    Public Sub New(ByVal tag As String)
        Me._tag = tag
    End Sub
End Class

Module Module1
    Sub Main()
        Dim ma As MyAnnotation = New MyAnnotation("T1")
        Dim root As XElement = <Root>content</Root>
        root.AddAnnotation(ma)

        Dim ma2 As MyAnnotation = DirectCast(root.Annotation(GetType(MyAnnotation)), MyAnnotation)
        Console.WriteLine(ma2.Tag)
    End Sub

End Module

This example produces the following output:

T1

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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