public static void Snippet13()
{
// <Snippet13>
Atom10ItemFormatter itemFormatter = new Atom10ItemFormatter();
XmlReader atomReader = XmlReader.Create("http://Contoso/Feeds/MyFeed/Item");
if (itemFormatter.CanRead(atomReader))
{
itemFormatter.ReadFrom(atomReader);
atomReader.Close();
}
// </Snippet13>
}
/// <summary>
/// Creates the atom entry document.
/// </summary>
/// <param name="atomXmlReader">The atom XML reader.</param>
private void CreateAtomEntryDocument(XmlReader atomXmlReader)
{
Atom10ItemFormatter formatter = new Atom10ItemFormatter();
bool isValidAtomEntry = formatter.CanRead(atomXmlReader);
if (isValidAtomEntry)
{
AtomDocument = SyndicationItem.Load(atomXmlReader);
bool isValidAtomPubEntry = null != AtomDocument.Id &&
DateTimeOffset.MinValue != AtomDocument.LastUpdatedTime &&
null != AtomDocument.Title &&
null != AtomDocument.Authors &&
0 < AtomDocument.Authors.Count;
if (isValidAtomPubEntry)
{
if (null == AtomDocument.Content)
{
isValidAtomPubEntry = AtomDocument.Links.Where(atomLink => string.Compare(atomLink.RelationshipType, "alternate", StringComparison.OrdinalIgnoreCase) == 0)
.Count() == 1;
}
else if (!(AtomDocument.Content is TextSyndicationContent))
{
isValidAtomPubEntry = null != AtomDocument.Summary;
}
}
if (!isValidAtomPubEntry)
{
throw new ArgumentException(Resources.ATOMPUB_INVALID_ATOMENTRYDOCUMENT, "atomXmlReader");
}
else
{
SetProperties();
}
}
else
{
throw new ArgumentException(Resources.ATOMPUB_INVALID_ATOMENTRYDOCUMENT, "atomXmlReader");
}
}
public void CanRead()
{
Atom10ItemFormatter f = new Atom10ItemFormatter();
Assert.IsFalse(f.CanRead(CreateReader("<feed xmlns='http://www.w3.org/2005/Atom'>")), "#1");
Assert.IsTrue(f.CanRead(CreateReader("<entry xmlns='http://www.w3.org/2005/Atom'>")), "#2");
Assert.IsFalse(f.CanRead(CreateReader("<entry>")), "#3");
Assert.IsFalse(f.CanRead(CreateReader("<item>")), "#4");
Assert.IsFalse(f.CanRead(CreateReader("<hoge xmlns='http://www.w3.org/2005/Atom'>")), "#5");
XmlReader r = CreateReader("<entry xmlns='http://www.w3.org/2005/Atom'></entry>");
r.Read(); // element
r.Read(); // endelement
Assert.IsFalse(f.CanRead(r), "#6");
r = CreateReader("<entry xmlns='http://www.w3.org/2005/Atom'><title>test</title></entry>");
r.Read(); // item
r.Read(); // title
Assert.IsFalse(f.CanRead(r), "#7");
}
