C#读取xml文档出错，加上命名空间就出错

Question

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
 <context-param>
 <param-name>isSuperNode</param-name>
    <param-value>yes</param-value>
      </context-param>
      
  <context-param>
    <param-name>superNode</param-name>
    <param-value>192.168.0.32_192.168.0.83_192.168.0.44_192.168.0.88_192.168.0.7_192.168.0.66_192.168.0.29</param-value>
  </context-param>
  
  <context-param>
    <param-name>generalNode</param-name>
    <param-value>192.168.0.1_192.168.0.2</param-value>
  </context-param>
  
  <context-param>
    <param-name>webPath</param-name>
   <param-value></param-value>
  </context-param>
  
  <context-param>
    <param-name>timeOut</param-name>
    <param-value>100</param-value>
  </context-param>
</web-app>
如果把根结点那些命名空间和规范信息去掉，读取就没有错误，如果加上就空指针异常，请高手帮忙！ XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load("D:\\web.xml");           XmlNode root = xmlDoc.SelectSingleNode("web-app");            //XmlNode root = xmlDoc.FirstChild;              //XmlNodeList xnl = root.ChildNodes;
            if(root.HasChildNodes)   //这句抛出异常
            {
            }

Answer 1

应该是你的schema文件没找到吧

Answer 2

XmlSchemaSet schemaSet = new XmlSchemaSet();
schemaSet.Add("<nameSpace>", "<path to schema file>");
XmlDocument sessionDocument = new XmlDocument();
sessionDocument.Schemas = schemaSet;
sessionDocument.Load("<path to xml file>");ValidationEventHandler eventHandler = new ValidationEventHandler(HandleValidationError);
sessionDocument.Validate(eventHandler);

Answer 3

using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;
namespace XmlSchemaVal
{
   class Program
   {
      static void Main(string[] args)
      {
         XmlSchemaSet schemas = new XmlSchemaSet();
         schemas.Add("http://tempuri.org/XMLSchema1.xsd", "..\\..\\XmlSchema1.xsd");
         XmlDocument doc = new XmlDocument();
         doc.Schemas = schemas;         bool containsErrors = false;         doc.Load("..\\..\\XmlFile1.xml");
         ValidationEventHandler validator = delegate(object sender, ValidationEventArgs e)
         {
            containsErrors = true;
            Console.WriteLine("{0}: {1}", e.Severity, e.Message);
         };         doc.Validate(validator);
         if (containsErrors)
         {
            Console.WriteLine("Document Contains Errors");
         }
      }
   }
}