C # Simple manipulation of XML

The XML file format is as follows:

<?xml version= "1.0" encoding= "Utf-8"?>  <userdata createuser= "false" >  <dataconnection>  <server>localhost</server>  <uid>sa</uid>  <pwd></pwd>  < /dataconnection>  <net>  <name>jiayuan</name>  </net>  </userdata >

Read a property in a node

XmlDocument doc=new XmlDocument ();  Doc. Load ("config +");//You can add the path again: such as D:\config.xml  XmlNode Xnuser=doc. selectSingleNode ("UserData");  String Flag=xnuser. attributes["CreateUser"]. InnerText;

Reading values from a node

XmlDocument doc=new XmlDocument ();  Doc. Load ("config +");  XmlNode xnserver = doc. selectSingleNode ("Userdata/dataconnection/server");

Modify the properties of a node

XmlDocument doc=new XmlDocument ();  Doc. Load ("config +");  XmlNode Xnuser=doc. selectSingleNode ("UserData");  Xnuser. attributes["CreateUser"]. Innertext= "false";  Doc. Save ("config +");

Append node

XmlDocument doc = new XmlDocument ();  XmlTextReader reader = new XmlTextReader ("config +");  Doc. Load ("config +");  XmlElement root = Doc. DocumentElement; Gets the root node  XmlElement tagmessage = doc. createelement ("net");  XmlElement Tagtext = doc. createelement ("name");  Tagtext.innertext = NetName;  Tagmessage.appendchild (Tagtext); Append to the last root of the XML text  . AppendChild (tagmessage);  Reader. Close (); Close XmlTextReader  Doc. Save ("config +"); Save the XML file