从 XmlDocument 到 XmlReader .Net

发布于 2024-12-29 03:14:51 字数 1259 浏览 0 评论 0原文

在回答了我的问题的用户的建议后，我尝试将我的 XmlDocument 代码转换为 XmlReader 代码，但我遇到了一些麻烦。

这是 XML（从 php-mysql 页面生成）

<row>
<idLink>64</idLink>
<idHost>3</idHost>
<url>http://www.google.com</url>
</row>
<row>
<idLink>68</idLink>
<idHost>4</idHost>
<url>http://www.bing.com</url>
</row>
..... until about 10000 rows

这是我的 XmlDocument 代码：

   xmlDoc.Load("http://www.myUrl.com/list.php");
      if (xmlDoc.DocumentElement != null){
          foreach (XmlNode node in xmlDoc.DocumentElement)
             {
              if (node.Name == "row")
                {
                  list.Add(new Links { 
                       idLink = Convert.ToInt32(node.ChildNodes[0].InnerText),
                       idHost = Convert.ToInt32(node.ChildNodes[1].InnerText),
                       url = node.ChildNodes[2].InnerText }); 
                  }
             }  
             return list;

现在我在 XmlReader 中转换时遇到一些麻烦，我尝试了很多代码，但无法处理它。

using (XmlReader reader = new XmlTextReader("http://myUrl.com/list.php"))
         { 
          if (reader.NodeType == XmlNodeType.Element) 
           ?????

原文

After an advice from a user that answered to my question I'm tring to convert my XmlDocument code to XmlReader code but I'm having some troubles.

This is XML (generated from php-mysql Page)

<row>
<idLink>64</idLink>
<idHost>3</idHost>
<url>http://www.google.com</url>
</row>
<row>
<idLink>68</idLink>
<idHost>4</idHost>
<url>http://www.bing.com</url>
</row>
..... until about 10000 rows

This is my XmlDocument code:

   xmlDoc.Load("http://www.myUrl.com/list.php");
      if (xmlDoc.DocumentElement != null){
          foreach (XmlNode node in xmlDoc.DocumentElement)
             {
              if (node.Name == "row")
                {
                  list.Add(new Links { 
                       idLink = Convert.ToInt32(node.ChildNodes[0].InnerText),
                       idHost = Convert.ToInt32(node.ChildNodes[1].InnerText),
                       url = node.ChildNodes[2].InnerText }); 
                  }
             }  
             return list;

Now I have some trouble to Convert in XmlReader, I tried many code but I can't handle it.

using (XmlReader reader = new XmlTextReader("http://myUrl.com/list.php"))
         { 
          if (reader.NodeType == XmlNodeType.Element) 
           ?????

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所有深爱都是秘密 2025-01-05 03:14:51

您可以使用

XmlReader xmlReader = new XmlNodeReader(xmlDoc);

参见：http://blog.jongallant.com/ 2007/01/convert-xmldocument-to-xmlreader.html

You can use

XmlReader xmlReader = new XmlNodeReader(xmlDoc);

See: http://blog.jongallant.com/2007/01/convert-xmldocument-to-xmlreader.html

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寂寞清仓 2025-01-05 03:14:51

如果您对 xml 文件执行只读操作，那么您可以使用 XmlReader，但正如 @Marc Gravell 指出的那样，这很困难。

在这种情况下，我将创建一个使用 XmlReader 包装 XPathDocument 的类。然后，我创建一个 XPathNavigator 来读取数据。下面是一个例子：

public class MyXmlReader
{
    public MyXmlReader(string xml)
    {
        StringReader sReader = new StringReader(xml);

        XPathDocument xml = new XPathDocument(XmlReader.Create(sReader));

        xmlNav = xml.CreateNavigator();
    }

    private XPathNavigator xmlNav = null;


    public MyDataModel ReadMyDataModel()
    {
        MyDataModel model = new MyDataModel();

        model.Read(xmlNav);

        return model;
    }
}

如上所示，然后可以将数据的读取封装到关联的对象模型中。您可以在我对此问题的回答中看到一些详细信息：

如何一次操作一个父元素的 XML 文档？

If you are doing read only operations on an xml file then you can you use XmlReader but as @Marc Gravell points out it is difficult.

In this situation I will create a class that wraps an XPathDocument using an XmlReader. I then create an XPathNavigator to read the data. Here's an example:

public class MyXmlReader
{
    public MyXmlReader(string xml)
    {
        StringReader sReader = new StringReader(xml);

        XPathDocument xml = new XPathDocument(XmlReader.Create(sReader));

        xmlNav = xml.CreateNavigator();
    }

    private XPathNavigator xmlNav = null;


    public MyDataModel ReadMyDataModel()
    {
        MyDataModel model = new MyDataModel();

        model.Read(xmlNav);

        return model;
    }
}

As shown above, the reading of the data can then be encapsulated into an associated object model. You can see some details in my answer on this question:

How do I manipulate an XML document one parent element at a time?

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