XObject.AddAnnotation Method

Adds an object to the annotation list of this XObject.

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

public void AddAnnotation(
	Object annotation
)

Parameters

annotation
Type: System.Object
An Object that contains the annotation to add.

Note that annotations are not part of the infoset; they are not persisted, or displayed by ToString.

The following example adds an annotation to an XElement.

public class MyAnnotation {
    private string tag;
    public string Tag {get{return tag;} set{tag=value;}}
    public MyAnnotation(string tag) {
        this.tag = tag;
    }
}

public class Program {
    public static void Main(string[] args) {   
        MyAnnotation ma = new MyAnnotation("T1");
        XElement root = new XElement("Root", "content");
        root.AddAnnotation(ma);

        MyAnnotation ma2 = (MyAnnotation)root.Annotation<MyAnnotation>();
        Console.WriteLine(ma2.Tag);
    }
}

This example produces the following output:

T1

.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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