Modalità di mapping del modello a oggetti di diffusione WCF ad Atom e RSS

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Quando si sviluppa un servizio di diffusione Windows Communication Foundation (WCF), si creano feed ed elementi usando le classi seguenti:

Un oggetto SyndicationFeed può essere serializzato in qualsiasi formato di diffusione per il quale è definito un formattatore. WCF viene fornito con due formattatori: Atom10FeedFormatter e Rss20FeedFormatter.

Il modello a oggetti basato su SyndicationFeed e SyndicationItem è più strettamente conforme alla specifica Atom 1.0 che non alla specifica RSS 2.0. Ciò è dovuto al fatto che Atom 1.0 è una specifica più sostanziale e definisce elementi ambigui o che sono stati omessi dalla specifica RSS 2.0. Di conseguenza, numerosi elementi nel modello a oggetti di diffusione di WCF non hanno rappresentazione diretta nella specifica RSS 2.0. Quando si serializzano oggetti SyndicationFeed e SyndicationItem in RSS 2.0, WCF consente di serializzare gli elementi di dati specifici di Atom come elementi di estensione qualificati con lo spazio dei nomi conformi alla specifica Atom. Questa procedura può essere controllata con un parametro passato al costruttore Rss20FeedFormatter.

Negli esempi di codice inclusi in questo argomento, per eseguire la serializzazione effettiva viene utilizzato uno dei due metodi illustrati qui.

SerializeFeed serializza un feed di diffusione.

public void SerializeFeed(SyndicationFeed feed)
{
    Atom10FeedFormatter atomFormatter = feed.GetAtom10Formatter();
    Rss20FeedFormatter rssFormatter = feed.GetRss20Formatter();

    XmlWriter atomWriter = XmlWriter.Create("atom.xml");
    XmlWriter rssWriter = XmlWriter.Create("rss.xml");
    atomFormatter.WriteTo(atomWriter);
    rssFormatter.WriteTo(rssWriter);
    atomWriter.Close();
    rssWriter.Close();
}

Public Sub SerializeFeed(ByVal feed As SyndicationFeed)

    Dim atomFormatter As Atom10FeedFormatter = feed.GetAtom10Formatter()
    Dim rssFormatter As Rss20FeedFormatter = feed.GetRss20Formatter()

    Dim atomWriter As XmlWriter = XmlWriter.Create("atom.xml")
    Dim rssWriter As XmlWriter = XmlWriter.Create("rss.xml")
    atomFormatter.WriteTo(atomWriter)
    rssFormatter.WriteTo(rssWriter)
    atomWriter.Close()
    rssWriter.Close()
End Sub

SerializeItem serializza un elemento di diffusione.

public void SerializeItem(SyndicationItem item)
{
    Atom10ItemFormatter atomFormatter = item.GetAtom10Formatter();
    Rss20ItemFormatter rssFormatter = item.GetRss20Formatter();

    XmlWriter atomWriter = XmlWriter.Create("atom.xml");
    XmlWriter rssWriter = XmlWriter.Create("rss.xml");
    atomFormatter.WriteTo(atomWriter);
    rssFormatter.WriteTo(rssWriter);
    atomWriter.Close();
    rssWriter.Close();
}

Public Sub SerializeItem(ByVal item As SyndicationItem)
    Dim atomFormatter As Atom10ItemFormatter = item.GetAtom10Formatter()
    Dim rssFormatter As Rss20ItemFormatter = item.GetRss20Formatter()

    Dim atomWriter As XmlWriter = XmlWriter.Create("atom.xml")
    Dim rssWriter As XmlWriter = XmlWriter.Create("rss.xml")
    atomFormatter.WriteTo(atomWriter)
    rssFormatter.WriteTo(rssWriter)
    atomWriter.Close()
    rssWriter.Close()
End Sub

SyndicationFeed

Nell'esempio di codice seguente viene illustrato come serializzare la classe SyndicationFeed per i formati Atom 1.0 e RSS 2.0.

SyndicationFeed feed = new SyndicationFeed("My Feed Title", "My Feed Description", new Uri("http://MyFeedURI"));
feed.Copyright = new TextSyndicationContent("Copyright 2007");
feed.Language = "EN-US";
feed.LastUpdatedTime = DateTime.Now;
feed.Generator = "Sample Code";
feed.Id = "FeedID";
feed.ImageUrl = new Uri("http://server/image.jpg");

SyndicationCategory category = new SyndicationCategory("MyCategory");
category.Label = "categoryLabel";
category.Name = "categoryName";
category.Scheme = "categoryScheme";
feed.Categories.Add(category);

SyndicationItem item = new SyndicationItem("Item Title", "Item Content", new Uri("http://MyItemURI"));
item.Authors.Add(new SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"));
item.Categories.Add(category);
item.Contributors.Add(new SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"));
item.Copyright = new TextSyndicationContent("Copyright 2007");
item.Id = "ItemID";
item.LastUpdatedTime = DateTime.Now;
item.PublishDate = DateTime.Today;
item.SourceFeed = feed;
item.Summary = new TextSyndicationContent("Item Summary");

Collection<SyndicationItem> items = new Collection<SyndicationItem>();
items.Add(item);
feed.Items = items;

SerializeFeed(feed);

Dim feed As New SyndicationFeed("My Feed Title", "My Feed Description", New Uri("http://MyFeedURI"))
feed.Copyright = New TextSyndicationContent("Copyright 2007")
feed.Language = "EN-US"
feed.LastUpdatedTime = DateTime.Now
feed.Generator = "Sample Code"
feed.Id = "FeedID"
feed.ImageUrl = New Uri("http://server/image.jpg")

Dim category As New SyndicationCategory("MyCategory")
category.Label = "categoryLabel"
category.Name = "categoryName"
category.Scheme = "categoryScheme"
feed.Categories.Add(category)

Dim item As New SyndicationItem("Item Title", "Item Content", New Uri("http://MyItemURI"))
item.Authors.Add(New SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"))
item.Categories.Add(category)
item.Contributors.Add(New SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"))
item.Copyright = New TextSyndicationContent("Copyright 2007")
item.Id = "ItemID"
item.LastUpdatedTime = DateTime.Now
item.PublishDate = DateTime.Today
item.SourceFeed = feed
item.Summary = New TextSyndicationContent("Item Summary")
Dim items As New Collection(Of SyndicationItem)()
items.Add(item)
feed.Items = items

SerializeFeed(feed)

Nel codice XML seguente viene mostrato come serializzare SyndicationFeed per il formato Atom 1.0.

<?xml version="1.0" encoding="utf-8"?>  
<feed xml:lang="EN-US" xmlns="http://www.w3.org/2005/Atom">  
  <title type="text">My Feed Title</title>  
  <subtitle type="text">My Feed Description</subtitle>  
  <id>FeedID</id>  
  <rights type="text">Copyright 2007</rights>  
  <updated>2007-08-29T13:57:17-07:00</updated>  
  <category term="categoryName" label="categoryLabel" scheme="categoryScheme" />  
  <logo>http://server/image.jpg</logo>  
  <generator>Sample Code</generator>  
  <link rel="alternate" href="http://myfeeduri/" />  
  <entry>  
    <id>ItemID</id>  
    <title type="text">Item Title</title>  
    <summary type="text">Item Summary</summary>  
    <published>2007-08-29T00:00:00-07:00</published>  
    <updated>2007-08-29T13:57:17-07:00</updated>  
    <author>  
      <name>Jesper Aaberg</name>  
      <uri>http://Jesper/Aaberg</uri>  
      <email>Jesper@Aaberg.com</email>  
    </author>  
    <contributor>  
      <name>Lene Aaling</name>  
      <uri>http://Lene/Aaling</uri>  
      <email>Lene@Aaling.com</email>  
    </contributor>  
    <link rel="alternate" href="http://myitemuri/" />  
    <category term="categoryName" label="categoryLabel" scheme="categoryScheme" />  
    <content type="text">Item Content</content>  
    <rights type="text">Copyright 2007</rights>  
    <source>  
      <title type="text">My Feed Title</title>  
      <subtitle type="text">My Feed Description</subtitle>  
      <id>FeedID</id>  
      <rights type="text">Copyright 2007</rights>  
      <updated>2007-08-29T13:57:17-07:00</updated>  
      <category term="categoryName" label="categoryLabel" scheme="categoryScheme" />  
      <logo>http://server/image.jpg</logo>  
      <generator>Sample Code</generator>  
      <link rel="alternate" href="http://myfeeduri/" />  
    </source>  
  </entry>  
</feed>

Nel codice XML seguente viene mostrato come serializzare SyndicationFeed per il formato RSS 2.0.

<?xml version="1.0" encoding="utf-8"?>  
<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">  
  <channel>  
    <title>My Feed Title</title>  
    <link>http://myfeeduri/</link>  
    <description>My Feed Description</description>  
    <language>EN-US</language>  
    <copyright>Copyright 2007</copyright>  
    <lastBuildDate>Wed, 29 Aug 2007 13:57:17 -0700</lastBuildDate>  
    <category domain="categoryScheme">categoryName</category>  
    <generator>Sample Code</generator>  
    <image>  
      <url>http://server/image.jpg</url>  
      <title>My Feed Title</title>  
      <link>http://myfeeduri/</link>  
    </image>  
    <a10:id>FeedID</a10:id>  
    <item>  
      <guid isPermaLink="false">ItemID</guid>  
      <link>http://myitemuri/</link>  
      <author>Jesper@Aaberg.com</author>  
      <category domain="categoryScheme">categoryName</category>  
      <title>Item Title</title>  
      <description>Item Summary</description>  
      <source>My Feed Title</source>  
      <pubDate>Wed, 29 Aug 2007 00:00:00 -0700</pubDate>  
      <a10:updated>2007-08-29T13:57:17-07:00</a10:updated>  
      <a10:rights type="text">Copyright 2007</a10:rights>  
      <a10:content type="text">Item Content</a10:content>  
      <a10:contributor>  
        <a10:name>Lene Aaling</a10:name>  
        <a10:uri>http://Lene/Aaling</a10:uri>  
        <a10:email>Lene@Aaling.com</a10:email>  
      </a10:contributor>  
    </item>  
  </channel>  
</rss>

SyndicationItem

Nell'esempio di codice seguente viene illustrato come serializzare la classe SyndicationItem per i formati Atom 1.0 e RSS 2.0.

SyndicationItem item = new SyndicationItem("Item Title", "Item Content", new Uri("http://MyItemURI"));
item.Authors.Add(new SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"));
item.Authors.Add(new SyndicationPerson("Syed.Abbas@contoso.com", "Syed Abbas", "http://Contoso/Abbas"));

SyndicationCategory category = new SyndicationCategory("MyCategory");
category.Label = "categoryLabel";
category.Name = "categoryName";
category.Scheme = "categoryScheme";

SyndicationCategory category2 = new SyndicationCategory("MyCategoryTwo");
category2.Label = "categoryLabel";
category2.Name = "categoryName";
category2.Scheme = "categoryScheme";

item.Categories.Add(category);
item.Categories.Add(category2);
item.Contributors.Add(new SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"));
item.Contributors.Add(new SyndicationPerson("Kim.Abercrombie@contoso.com", "Kim Abercrombie", "http://Contoso/Abercrombie"));
item.Copyright = new TextSyndicationContent("Copyright 2007");
item.Id = "ItemID";
item.LastUpdatedTime = DateTime.Now;
item.PublishDate = DateTime.Today;
item.SourceFeed = feed;
item.Summary = new TextSyndicationContent("Item Summary");

Collection<SyndicationItem> items = new Collection<SyndicationItem>();
items.Add(item);
feed.Items = items;

SerializeItem(item);

Dim item As New SyndicationItem("Item Title", "Item Content", New Uri("http://MyItemURI"))
item.Authors.Add(New SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"))
item.Authors.Add(New SyndicationPerson("Syed.Abbas@contoso.com", "Syed Abbas", "http://Contoso/Abbas"))

Dim category As New SyndicationCategory("MyCategory")
category.Label = "categoryLabel"
category.Name = "categoryName"
category.Scheme = "categoryScheme"

Dim category2 As New SyndicationCategory("MyCategoryTwo")
category2.Label = "categoryLabel"
category2.Name = "categoryName"
category2.Scheme = "categoryScheme"

item.Categories.Add(category)
item.Categories.Add(category2)
item.Contributors.Add(New SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"))
item.Contributors.Add(New SyndicationPerson("Kim.Abercrombie@contoso.com", "Kim Abercrombie", "http://Contoso/Abercrombie"))
item.Copyright = New TextSyndicationContent("Copyright 2007")
item.Id = "ItemID"
item.LastUpdatedTime = DateTime.Now
item.PublishDate = DateTime.Today
item.SourceFeed = feed
item.Summary = New TextSyndicationContent("Item Summary")
Dim items As New Collection(Of SyndicationItem)()
items.Add(item)
feed.Items = items

SerializeItem(item)

Nel codice XML seguente viene mostrato come serializzare SyndicationItem per il formato Atom 1.0.

<entry xmlns="http://www.w3.org/2005/Atom">  
  <id>ItemID</id>  
  <title type="text">Item Title</title>  
  <summary type="text">Item Summary</summary>  
  <published>2007-08-29T00:00:00-07:00</published>  
  <updated>2007-08-29T14:07:09-07:00</updated>  
  <author>  
    <name>Jesper Aaberg</name>  
    <uri>http://Contoso/Aaberg</uri>  
    <email>Jesper.Aaberg@contoso.com</email>  
  </author>  
  <author>  
    <name>Syed Abbas</name>  
    <uri>http://Contoso/Abbas</uri>  
    <email>Syed.Abbas@contoso.com</email>  
  </author>  
  <contributor>  
    <name>Lene Aaling</name>  
    <uri>http://Contoso/Aaling</uri>  
    <email>Lene.Aaling@contoso.com</email>  
  </contributor>  
  <contributor>  
    <name>Kim Abercrombie</name>  
    <uri>http://Contoso/Abercrombie</uri>  
    <email>Kim.Abercrombie@contoso.com</email>  
  </contributor>  
  <link rel="alternate" href="http://myitemuri/" />  
  <category term="categoryName" label="categoryLabel" scheme="categoryScheme" />  
  <category term="categoryName" label="categoryLabel" scheme="categoryScheme" />  
  <content type="text">Item Content</content>  
  <rights type="text">Copyright 2007</rights>  
  <source>  
    <title type="text">My Feed Title</title>  
    <subtitle type="text">My Feed Description</subtitle>  
    <link rel="alternate" href="http://myfeeduri/" />  
  </source>  
</entry>

Nel codice XML seguente viene mostrato come serializzare SyndicationItem per il formato RSS 2.0.

<item>  
  <guid isPermaLink="false">ItemID</guid>  
  <link>http://myitemuri/</link>  
  <author xmlns="http://www.w3.org/2005/Atom">  
    <name>Jesper Aaberg</name>  
    <uri>http://Jesper/Aaberg</uri>  
    <email>Jesper@Aaberg.com</email>  
  </author>  
  <author xmlns="http://www.w3.org/2005/Atom">  
    <name>Syed Abbas</name>  
    <uri>http://Contoso/Abbas</uri>  
    <email>Syed.Abbas@contoso.com</email>  
  </author>  
  <category domain="categoryScheme">categoryName</category>  
  <category domain="categoryScheme">categoryName</category>  
  <title>Item Title</title>  
  <description>Item Summary</description>  
  <source>My Feed Title</source>  
  <pubDate>Wed, 29 Aug 2007 00:00:00 -0700</pubDate>  
  <updated xmlns="http://www.w3.org/2005/Atom">2007-08-29T14:07:09-07:00</updated>  
  <rights type="text" xmlns="http://www.w3.org/2005/Atom">Copyright 2007</rights>  
  <content type="text" xmlns="http://www.w3.org/2005/Atom">Item Content</content>  
  <contributor xmlns="http://www.w3.org/2005/Atom">  
    <name>Lene Aaling</name>  
    <uri>http://Contoso/Aaling</uri>  
    <email>Lene.Aaling@contoso.com</email>  
  </contributor>  
  <contributor xmlns="http://www.w3.org/2005/Atom">  
    <name>Kim Abercrombie</name>  
    <uri>http://Contoso/Abercrombie</uri>  
    <email>Kim.Abercrombie@contoso.com</email>  
  </contributor>  
</item>

SyndicationPerson

Nell'esempio di codice seguente viene illustrato come serializzare la classe SyndicationPerson per i formati Atom 1.0 e RSS 2.0.

SyndicationFeed feed = new SyndicationFeed("My Feed Title", "My Feed Description", new Uri("http://MyFeedURI"));
feed.Authors.Add(new SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"));
feed.Authors.Add(new SyndicationPerson("Syed.Abbas@contoso.com", "Syed Abbas", "http://Contoso/Abbas"));

feed.Contributors.Add(new SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"));
feed.Contributors.Add(new SyndicationPerson("Kim.Abercrombie@contoso.com", "Kim Abercrombie", "http://Contoso/Abercrombie"));

SerializeFeed(feed);

Dim feed As New SyndicationFeed("My Feed Title", "My Feed Description", New Uri("http://MyFeedURI"))
feed.Authors.Add(New SyndicationPerson("Jesper.Aaberg@contoso.com", "Jesper Aaberg", "http://Contoso/Aaberg"))
feed.Authors.Add(New SyndicationPerson("Syed.Abbas@contoso.com", "Syed Abbas", "http://Contoso/Abbas"))

feed.Contributors.Add(New SyndicationPerson("Lene.Aaling@contoso.com", "Lene Aaling", "http://Contoso/Aaling"))
feed.Contributors.Add(New SyndicationPerson("Kim.Abercrombie@contoso.com", "Kim Abercrombie", "http://Contoso/Abercrombie"))

SerializeFeed(feed)

Nel codice XML seguente viene mostrato come serializzare SyndicationPerson per il formato Atom 1.0.

  <author>  
    <name>Jesper Aaberg</name>  
    <uri>http://Contoso/Aaberg</uri>  
    <email>Jesper.Aaberg@contoso.com</email>  
  </author>  
<contributor>  
    <name>Lene Aaling</name>  
    <uri>http://Contoso/Aaling</uri>  
    <email>Lene.Aaling@contoso.com</email>  
  </contributor>

Nell'XML seguente viene illustrato come serializzare la classe SyndicationPerson per il formato RSS 2.0 se esiste un solo SyndicationPerson rispettivamente nelle raccolte Authors o Contributors.

<author>Jesper.Aaberg@contoso.com</author>  
<a10:contributor>  
    <a10:name>Lene Aaling</a10:name>  
    <a10:uri>http://Contoso/Aaling</a10:uri>  
    <a10:email>Lene.Aaling@contoso.com</a10:email>  
</a10:contributor>

Nell'XML seguente viene illustrato come serializzare la classe SyndicationPerson per il formato RSS 2.0 se esiste più di un SyndicationPerson rispettivamente nelle raccolte Authors o Contributors.

<a10:author>  
    <a10:name>Jesper Aaberg</a10:name>  
    <a10:uri>http://Contoso/Aaberg</a10:uri>  
    <a10:email>Jesper.Aaberg@contoso.com</a10:email>  
</a10:author>  
<a10:author>  
    <a10:name>Syed Abbas</a10:name>  
    <a10:uri>http://Contoso/Abbas</a10:uri>  
    <a10:email>Syed.Abbas@contoso.com</a10:email>  
</a10:author>  
<a10:contributor>  
    <a10:name>Lene Aaling</a10:name>  
    <a10:uri>http://Contoso/Aaling</a10:uri>  
    <a10:email>Lene.Aaling@contoso.com</a10:email>  
</a10:contributor>  
<a10:contributor>  
    <a10:name>Kim Abercrombie</a10:name>  
    <a10:uri>http://Contoso/Abercrombie</a10:uri>  
    <a10:email>Kim.Abercrombie@contoso.com</a10:email>  
</a10:contributor>

Nell'esempio di codice seguente viene illustrato come serializzare la classe SyndicationLink per i formati Atom 1.0 e RSS 2.0.

SyndicationFeed feed = new SyndicationFeed("My Feed Title", "My Feed Description", new Uri("http://MyFeedURI"));
feed.Links.Add(new SyndicationLink(new Uri("http://contoso/MyLink"), "alternate", "My Link Title", "text/html", 2048));

SerializeFeed(feed);

Dim feed As New SyndicationFeed("My Feed Title", "My Feed Description", New Uri("http://MyFeedURI"))
feed.Links.Add(New SyndicationLink(New Uri("http://contoso/MyLink"), "alternate", "My Link Title", "text/html", 2048))

SerializeFeed(feed)

Nel codice XML seguente viene mostrato come serializzare SyndicationLink per il formato Atom 1.0.

<link rel="alternate" type="text/html" title="My Link Title" length="2048" href="http://contoso/MyLink" />

Nel codice XML seguente viene mostrato come serializzare SyndicationLink per il formato RSS 2.0.

<a10:link rel="alternate" type="text/html" title="My Link Title" length="2048" href="http://contoso/MyLink" />

SyndicationCategory

Nell'esempio di codice seguente viene illustrato come serializzare la classe SyndicationCategory per i formati Atom 1.0 e RSS 2.0.

SyndicationFeed feed = new SyndicationFeed("My Feed Title", "My Feed Description", new Uri("http://MyFeedURI"));

SyndicationCategory category = new SyndicationCategory("MyCategory");
category.Label = "categoryLabel";
category.Name = "categoryName";
category.Scheme = "categoryScheme";
feed.Categories.Add(category);

SerializeFeed(feed);

Dim feed As New SyndicationFeed("My Feed Title", "My Feed Description", New Uri("http://MyFeedURI"))

Dim category As New SyndicationCategory("MyCategory")
category.Label = "categoryLabel"
category.Name = "categoryName"
category.Scheme = "categoryScheme"
feed.Categories.Add(category)

SerializeFeed(feed)

Nel codice XML seguente viene mostrato come serializzare SyndicationCategory per il formato Atom 1.0.

<category term="categoryName" label="categoryLabel" scheme="categoryScheme" />

Nel codice XML seguente viene mostrato come serializzare SyndicationCategory per il formato RSS 2.0.

<category domain="categoryScheme">categoryName</category>

TextSyndicationContent

Nell'esempio di codice seguente viene illustrato come serializzare la classe TextSyndicationContent per i formati Atom 1.0 e RSS 2.0 quando viene creato TextSyndicationContent con contenuto HTML.

SyndicationItem htmlItem = new SyndicationItem();
htmlItem.Content = new TextSyndicationContent("<html> some html </html>", TextSyndicationContentKind.Html);

SerializeItem(htmlItem);

Dim htmlItem As New SyndicationItem()
htmlItem.Content = New TextSyndicationContent("<html> some html </html>", TextSyndicationContentKind.Html)

SerializeItem(htmlItem)

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto HTML per il formato Atom 1.0.

<content type="html"><html> some html </html></content>

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto HTML per il formato RSS 2.0.

<description><html> some html </html></description>

Nell'esempio di codice seguente viene illustrato come serializzare la classe TextSyndicationContent per i formati Atom 1.0 e RSS 2.0 quando viene creato TextSyndicationContent con contenuto di testo normale.

SyndicationItem txtItem = new SyndicationItem();
txtItem.Content = new TextSyndicationContent("Some Plain Text", TextSyndicationContentKind.Plaintext);

SerializeItem(txtItem);

Dim txtItem As New SyndicationItem()
txtItem.Content = New TextSyndicationContent("Some Plain Text", TextSyndicationContentKind.Plaintext)

SerializeItem(txtItem)

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto di testo normale per il formato Atom 1.0.

<content type="text">Some Plain Text</content>

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto di testo normale per il formato RSS 2.0.

<description>Some Plain Text</description>

Nell'esempio di codice seguente viene illustrato come serializzare la classe TextSyndicationContent per i formati Atom 1.0 e RSS 2.0 quando viene creato TextSyndicationContent con contenuto XHTML.

SyndicationItem xhtmlItem = new SyndicationItem();
xhtmlItem.Content = new TextSyndicationContent("<html> some xhtml </html>", TextSyndicationContentKind.XHtml);

SerializeItem(xhtmlItem);

Dim xhtmlItem As New SyndicationItem()
xhtmlItem.Content = New TextSyndicationContent("<html> some xhtml </html>", TextSyndicationContentKind.XHtml)

SerializeItem(xhtmlItem)

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto XHTML per il formato Atom 1.0.

<content type="xhtml">

<html> some xhtml </html>

</content>

Nel codice XML seguente viene illustrato come serializzare la classe TextSyndicationContent con contenuto XHTML per il formato RSS 2.0.

<description><html> some xhtml </html></description>

UrlSyndicationContent

Nell'esempio di codice seguente viene illustrato come serializzare la classe UrlSyndicationContent per i formati Atom 1.0 e RSS 2.0.

SyndicationItem urlItem = new SyndicationItem();
urlItem.Content = new UrlSyndicationContent(new Uri("http://Contoso/someUrl"), "audio");

SerializeItem(urlItem);

Dim urlItem As New SyndicationItem()
urlItem.Content = New UrlSyndicationContent(New Uri("http://Contoso/someUrl"), "audio")

SerializeItem(urlItem)

Nel codice XML seguente viene illustrato come serializzare la classe UrlSyndicationContent per il formato Atom 1.0.

<content type="audio" src="http://someurl/" />

Nel codice XML seguente viene illustrato come serializzare la classe UrlSyndicationContent con contenuto XHTML per il formato RSS 2.0.

<description />

<content type="audio" src="http://Contoso/someurl/" xmlns="http://www.w3.org/2005/Atom" />

XmlSyndicationContent

Nell'esempio di codice seguente viene illustrato come serializzare la classe XmlSyndicationContent per i formati Atom 1.0 e RSS 2.0.

SyndicationItem xmlItem = new SyndicationItem();

xmlItem.Title = new TextSyndicationContent("Xml Item Title");
xmlItem.Content = new XmlSyndicationContent("mytype", new SyndicationElementExtension(new SomeData()));

SerializeItem(xmlItem);

Dim xmlItem As New SyndicationItem()

xmlItem.Title = New TextSyndicationContent("Xml Item Title")
xmlItem.Content = New XmlSyndicationContent("mytype", New SyndicationElementExtension(New SomeData()))

SerializeItem(xmlItem)

Nel codice XML seguente viene illustrato come serializzare la classe XmlSyndicationContent per il formato Atom 1.0.

<content type="mytype">

<SomeData xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/FeedMapping" />

</content>

Nel codice XML seguente viene illustrato come serializzare la classe XmlSyndicationContent con contenuto XHTML per il formato RSS 2.0.

<content type="mytype" xmlns="http://www.w3.org/2005/Atom">

<SomeData xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/FeedMapping" />

</content>

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