C # xml,xmldocument Simple Operation Example

     Private Static string " /data/bookstore.xml ";

1. Adding nodes

/// <summary>///inserting a node into the root node/// </summary> Public Static voidAddOne () {XmlDocument xmldoc=NewXmlDocument ();    Xmldoc.load (_store); //1. Find the Booksotre nodeXmlNode root = Xmldoc.selectsinglenode ("Bookstore"); //2. Create a book nodeXmlElement book = Xmldoc.createelement (" Book"); Book. SetAttribute ("genre","Lizanhong"); Book. SetAttribute ("ISBN","2-3431-4"); XmlElement title= Xmldoc.createelement ("title"); Title. InnerText="C # Getting Started classic"; Book.    AppendChild (title); XmlElement author= Xmldoc.createelement ("author"); Author. InnerText="Houjie"; Book.    AppendChild (author); XmlElement Price= Xmldoc.createelement (" Price"); Price. InnerText="58.3"; Book.    AppendChild (price); //Add the book node to the root nodeRoot.    AppendChild (book); //Save ContentXmldoc.save (_store);}

2. Modify the Node

/// <summary>///Modify Node/// </summary> Public Static voidUpdateone () {XmlDocument doc=NewXmlDocument (); Doc.    Load (_store); //Traverse ModificationXmlNodeList nodeList = doc. selectSingleNode ("Bookstore").    ChildNodes; foreach(XmlNode nodeinchnodeList) {        //To Convert a child node type to a xmleletment typeXmlElement ele =(XmlElement) node; if(Ele. GetAttribute ("genre") =="Lizanhong") {ele. SetAttribute ("genre","udpate Tribute to the red"); XmlNodeList NodeList2=Ele.            ChildNodes; foreach(XmlNode Node2inchnodeList2) {XmlElement Ele2=(XmlElement) Node2; if(Ele2. Name = ="author") {Ele2. InnerText="deferred";  Break; }            }             Break; }    }    //Save ChangesDoc. Save (_store);}/// <summary>///Modify Node 2, using XPath/// </summary> Public Static voidUpdatetwo () {XmlDocument doc=NewXmlDocument (); Doc.    Load (_store); //Query Node//XmlNode root = Doc.    selectSingleNode ("bookstore"); //XmlNodeList books = doc. SelectNodes ("Bookstore/book");XmlNode title = Doc. SelectNodes ("Bookstore/book/title")[0]; Title. InnerText= title. InnerText +"---XPath"; Doc. Save (_store);}

3. Delete a node

/// <summary>///Delete node, properties, Content/// </summary> Public Static voidDeleteone () {XmlDocument doc=NewXmlDocument (); Doc.    Load (_store); XmlNodeList NodeList= Doc. selectSingleNode ("Bookstore").    ChildNodes; foreach(varIteminchnodeList) {XmlElement Ele=(XmlElement) item; if(Ele. GetAttribute ("genre") =="Fantasy")        {            //Delete PropertyEle. RemoveAttribute ("genre"); }        Else if(Ele. GetAttribute ("genre") =="udpate Tribute to the red")        {            //Delete the entire contents of the nodeEle.        RemoveAll (); }    }    //Save ChangesDoc. Save (_store);}/// <summary>///Delete Empty nodes/// </summary> Public Static voidDeletetwo () {XmlDocument doc=NewXmlDocument (); Doc.    Load (_store); XmlNode Root= Doc. selectSingleNode ("Bookstore"); XmlNodeList NodeList=Root.    ChildNodes; foreach(XmlNode nodeinchnodeList) {XmlElement Ele=(XmlElement) node; if(Ele. Childnodes.count <=0)            //only immediate child nodes can be deletedRoot.    RemoveChild (node); } doc. Save (_store);}

4. Query List

/// <summary>///Show all the data/// </summary> Public Static voidShowone () {XmlDocument doc=NewXmlDocument (); Doc.    Load (_store); XmlNode Root= Doc. selectSingleNode ("Bookstore"); XmlNodeList NodeList=Root.    ChildNodes; foreach(varNodeinchnodeList) {XmlElement Ele=(XmlElement) node; Console.WriteLine (Ele. GetAttribute ("genre")); Console.WriteLine (Ele. GetAttribute ("ISBN")); XmlNodeList NodeList2=Ele.        ChildNodes; foreach(XmlNode Node2inchnodeList2) {Console.WriteLine (node2).        InnerText); }    }}

C # xml,xmldocument Simple Operation Example