SyndicationFeed.WriteAttributeExtensions Method

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Writes the attribute extensions to the specified XmlWriter using the specified syndication version.

Namespace:  System.ServiceModel.Syndication
Assembly:  System.ServiceModel.Syndication (in System.ServiceModel.Syndication.dll)


Protected Friend Overridable Sub WriteAttributeExtensions ( _
    writer As XmlWriter, _
    version As String _
protected internal virtual void WriteAttributeExtensions(
    XmlWriter writer,
    string version


  • version
    Type: System.String
    The syndication version to use while writing.


Attribute extensions are custom attributes that are not defined by the Atom 1.0 or RSS 2.0 specifications. They are serialized as an attribute of the <feed> (for Atom 1.0) or <rss> (for RSS 2.0) element, which depends upon the syndication version being used. This method is an extension point that allows you to handle the serialization of custom attribute extensions. To do this, you must derive a class from SyndicationFeed and override this method. This method is called for all unrecognized attribute extensions.

Version Information


Supported in: 5, 4, 3


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.