SyndicationFeed.ElementExtensions 屬性

定義

命名空間:

System.ServiceModel.Syndication

組件:

System.ServiceModel.Syndication.dll

套件:

System.ServiceModel.Syndication v9.0.0

來源:

SyndicationFeed.cs

為摘要取得項目延伸。

public:
 property System::ServiceModel::Syndication::SyndicationElementExtensionCollection ^ ElementExtensions { System::ServiceModel::Syndication::SyndicationElementExtensionCollection ^ get(); };

public System.ServiceModel.Syndication.SyndicationElementExtensionCollection ElementExtensions { get; }

member this.ElementExtensions : System.ServiceModel.Syndication.SyndicationElementExtensionCollection

Public ReadOnly Property ElementExtensions As SyndicationElementExtensionCollection

屬性值

SyndicationElementExtensionCollection

包含摘要項目延伸的 SyndicationElementExtensionCollection 執行個體。

範例

下列程式碼會示範如何將項目延伸加入至 SyndicationFeed 執行個體。

SyndicationFeed feed = new SyndicationFeed();

// Add several different types of element extensions
feed.ElementExtensions.Add("simpleString", "", "hello, world!");
feed.ElementExtensions.Add("simpleString", "", "another simple string");

// DataContractExtension is a user-defined type marked with the DataContractAttribute
feed.ElementExtensions.Add( new DataContractExtension() {Key = "X", Value = 4});

// XmlSerializerExtension is a user-defined type that defines a ToString() method
feed.ElementExtensions.Add( new XmlSerializerExtension() {Key = "Y", Value = 8}, new XmlSerializer(typeof(XmlSerializerExtension)));

feed.ElementExtensions.Add(new XElement("xElementExtension", new XElement("Key", new XAttribute("attr1", "someValue"), "Z"),
    new XElement("Value", new XAttribute("attr1", "someValue"), "15")).CreateReader());

Dim feed As New SyndicationFeed()

' Add several different types of element extensions.
feed.ElementExtensions.Add("simpleString", "", "hello, world!")
feed.ElementExtensions.Add("simpleString", "", "another simple string")

'  DataContractExtension is a user-defined type marked with the DataContractAttribute
feed.ElementExtensions.Add(New DataContractExtension With {.Key = "X", .Value = 4})

'  XmlSerializerExtension is a user-defined type that defines a ToString() method
feed.ElementExtensions.Add(New XmlSerializerExtension With {.Key = "Y", .Value = 8}, New XmlSerializer(GetType(XmlSerializerExtension)))

feed.ElementExtensions.Add(New XElement("xElementExtension", _
                            New XElement("Key", New XAttribute("attr1", "someValue"), "Z"), _
                            New XElement("Value", New XAttribute("attr1", "someValue"), "15")).CreateReader())

備註

項目延伸是指 Atom 1.0 或 RSS 2.0 規格中未指定的有效 XML 項目。 假設某個有效 XML 項目的命名空間與封入命名空間不同，您便可將任何此類項目新增為延伸。

<mg:MyElement xmlns:mg="http://myserver/elements" />

如需新增元素延伸的範例，請參閱 鬆散類型延伸 模組範例。