C # Reading Xml files

In C #, you can use the XmlDocument class to operate Xml files.

For example, to read the following Xml file

      
  
          25     
       
  
          56     
     
 

The program is as follows:

XmlDocument doc = new XmlDocument (); doc. load ("config. xml "); // load the Xml file XmlElement rootElem = doc. documentElement; // get the root node XmlNodeList personNodes = rootElem. getElementsByTagName ("person"); // gets the foreach (XmlNode node in personNodes) {string strName = (XmlElement) node) of the person subnode set ). getAttribute ("name"); // obtain the name attribute value Console. writeLine (strName); XmlNodeList subAgeNodes = (XmlElement) node ). getElementsByTagName ("age"); // gets the age sub-XmlElement set if (subAgeNodes. count = 1) {string strAge = subAgeNodes [0]. innerText; Console. writeLine (strAge );}}

XmlElement inherits from XmlNode.

XmlElement has GetAttribute () & GetElementsByTagName () and other methods, while XmlNode does not

Whether the ChildNodes attribute of XmlNode or the GetElementsByTagName () method of XmlElement is used, XmlNodeList is obtained.

So here there is a question about the type of XmlNode in the obtained XmlNodeList.

It can be determined based on the NodeType attribute of XmlNode.

If it is equal to XmlNodeType. Element, it can be converted to XmlElement to use the XmlElement method.