Gets the attribute extensions for the syndication item.
Assembly: System.ServiceModel.Syndication (in System.ServiceModel.Syndication.dll)
The Syndication object model allows you to add custom attributes to a SyndicationItem instance. When serialized for Atom 1.0, the custom attribute is written to an <entry> element. When serialized for RSS 2.0, the custom attribute is written to an <item> element.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.