在.Net1.2中对Xquery的支持

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在.Net1.2中支持Xquery，Xquery使用一种叫FLWOR的查询语言（音Flower）.例子如下：

using System;using System.IO;using System.Xml;using System.Xml.Query;using System.Data.SqlXml;namespace Xquery{public class XquerySample{  public static void Main(string[] args)  {    System.Xml.XmlDataSourceResolver ds = new System.Xml.XmlDataSourceResolver ();    ds.Add("bookstore","books.xml");    StreamWriter writer=new StreamWriter("output.xml");    string query=@"<bookstore>      {         for $b in document('bookstore')/bookstore/book         where $b/@genre='philosophy' and $b/@publicationdate='1991'        return $b/title       }    </bookstore>";    XqueryProcessor xp = new XqueryProcessor ();    xp.Compile(query);    xp.Execute(ds, writer);    writer.Close();  }  }}

books.xml

<?xml version="1.0" encoding="utf-8"?><!-- This file represents a fragment of a bookstore database --><bookstore>  <book genre="autobiography" publicationdate="1981" ISBN="1-861-11-0">    <title>The Autobiography of Benjamin Franklin</title>    <author>        <first-name>Benjamin</first-name>        <last-name>Franklin</last-name>   </author>    <price>8.99</price>  </book>  <book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">    <title>The Confidence Man</title>    <author>      <first-name>Herman</first-name>      <last-name>Melville</last-name>   </author>    <price>11.99</price>  </book>  <book genre="philosophy" publicationdate="1991"   ISBN="1-861001-57-6">   <title>The Gorgias</title>    <author>      <name>Plato</name>    </author>    <price>9.99</price>  </book></bookstore>

output.xml<?xml version="1.0" encoding="utf-8"?><bookstore><title>The Gorgias</title></bookstore>

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