C#对XML文件的操作

最新推荐文章于 2019-08-23 16:18:35 发布

壹零_虬枝

最新推荐文章于 2019-08-23 16:18:35 发布

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分类专栏： C/C++/C#程序设计文章标签： xml c# string null file

本文链接：https://blog.youkuaiyun.com/nosiliu/article/details/1005278

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//reader xml by XmlTextReaer

XmlTextReader tr = new XmlTextReader(filename);
while (tr.Read())
{
         if (tr.MoveToContent() == XmlNodeType.Element)
           {
            if (tr.Name == "nodename") pageWidth = tr.ReadElementString();
           }
}
tr.Close();

//write xml file by XmlTestWriter
XmlTextWriter tw = new XmlTextWriter(filename,null);
tw.Formatting = Formatting.Indented;
tw.WriteStartDocument();
    tw.WriteStartElement("cfg"); //wirte node
               tw.WriteElementString("pageWidth", pageWidth); // write element
    tw.WriteEndElement();
tw.WriteEndDocument();
tw.Flush();
tw.Close();

//有关xml的查询采用Xpath检索数据

XPathDocument doc = new XPathDocument("file.xml");
XPathNavigator nav = doc.CreateNavigator();
XPathNodeItemrator iter = nav.Select("/books/book[@titile='a wolf with sheep']");

while(iter.MoveNext())
{
XPathNodeItemrator iterbook = iter.SelectDescendants(XPathNodeType.Element,false);
String strTemp = iterbook.Current.Value
}