[代码]如何从XmlReader创建XML树(LINQ to XML)

此代码演示如何直接从XmlReader创建XML树。

示例代码
下面的代码首先使用XmlReader.Create()静态方法创建了一个XmlReader对象。然后将此XmlReader对象作为XElement.Load()方法的参数，这样便可以直接从XmlReader创建树了。需要强调的是，必须确保XmlReader被定为到元素上，否则可能会引发错误。代码中有具体的实现办法。
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Xml.Linq; using System.Xml; namespace Demo05Ex01 { class Program { static void Main(string[] args) { XmlReader Reader = XmlReader.Create(@"C:/LINQ/Books.xml"); while (Reader.NodeType != XmlNodeType.Element) Reader.Read(); XElement Books = XElement.Load(Reader); Console.WriteLine(Books); } } }
上面程序打印到控制台上XML内容如下：
<Catalog> <Book id="bk101"> <Author>Garghentini, Davide</Author> <Title>XML Developer's Guide</Title> <Genre>Computer</Genre> <Price>44.95</Price> <PublishDate>2000-10-01</PublishDate> <Description> An in-depth look at creating applications with XML. </Description> </Book> <Book id="bk102"> <Author>Garcia, Debra</Author> <Title>Midnight Rain</Title> <Genre>Fantasy</Genre> <Price>5.95</Price> <PublishDate>2000-12-16</PublishDate> <Description> A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world. </Description> </Book> </Catalog>