C # Common Operations Class Library III (XML operation Class)

/// <summary>///a summary description of the xmlhelper. ///XML Operation Classes/// </summary> Public classxmlhelper{protected stringStrxmlfile; protectedXmlDocument objXMLDoc =NewXmlDocument (); PublicXmlhelper (stringxmlfile) {//  　　 //TODO: Add the program code for the constructor here//  　　 Try{objxmldoc.load (xmlfile); }Catch(System.Exception ex) {Throwex; } strxmlfile=xmlfile;} PublicDataTable GetData (stringXmlpathnode) {//find data. Returns a DataViewDataSet ds =NewDataSet (); StringReader Read=NewStringReader (Objxmldoc.selectsinglenode (Xmlpathnode).　　OuterXml); Ds.　　READXML (read); returnDs. tables[0];}/// <summary>///The content of the new node. ///Example: Xmltool.replace ("book/authors[isbn=\" 0002\ "]/content", "PPPPPPP");/// </summary>/// <param name= "Xmlpathnode" ></param>/// <param name= "Content" ></param> Public voidReplace (stringXmlpathnode,stringContent) {//updates the node content. Objxmldoc.selectsinglenode (Xmlpathnode). InnerText =Content;}/// <summary>///deletes a child node of a specified node. ///Example: Xmltool.deletechild ("book/authors[isbn=\" 0003\ "]");/// </summary>/// <param name= "Node" ></param> Public voidDeletechild (stringNode) {//deletes a node.  　　 stringMainnode = node.substring (0, Node.lastindexof ("/")); Objxmldoc.selectsinglenode (Mainnode). RemoveChild (Objxmldoc.selectsinglenode (Node));} /// <summary>///* Use the following columns:///Example: Xmlhelper.delete ("/node", "" ")///xmlhelper.delete ("/node", "Attribute")/// </summary>/// <param name= "Node" >node</param>/// <param Name= "attribute" >property name, not empty when the node property value is deleted, otherwise the node value is deleted</param> Public voidDelete (stringNodestringattribute) {Try{XmlNode xn=objxmldoc.selectsinglenode (node); XmlElement XE=(XmlElement) xn; if(attribute. Equals ("") ) xn.　　　　Parentnode.removechild (xn); ElseXE.　　RemoveAttribute (attribute); }Catch { }}/// <summary>///inserts a node and a child node of this node. ///Example: Xmltool.insertnode ("book", "Author", "ISBN", "0004");/// </summary>/// <param name= "Mainnode" >Master Node</param>/// <param name= "Childnode" >child Nodes</param>/// <param name= "Element" >Elements</param>/// <param name= "Content" >content</param> Public voidInsertnode (stringMainnode,stringChildnode,stringElement,stringContent) {//inserts a node and a child node of this node. XmlNode Objrootnode =Objxmldoc.selectsinglenode (Mainnode); XmlElement Objchildnode=objxmldoc.createelement (Childnode); Objrootnode.appendchild (Objchildnode); XmlElement objelement=objxmldoc.createelement (Element); Objelement.innertext=Content;objchildnode.appendchild (objelement);}/// <summary>///inserts a node with an attribute. ///Example: Xmltool.insertelement ("book/author[isbn=\" 0004\ "]", "Title", "Sex", "Man", "IIIIIIII");/// </summary>/// <param name= "Mainnode" >Master Node</param>/// <param name= "Element" >Elements</param>/// <param name= "Attrib" >Properties</param>/// <param name= "Attribcontent" >Property Content</param>/// <param name= "Content" >element Content</param> Public voidInsertelement (stringMainnode,stringElement,stringAttrib,stringAttribcontent,stringContent) {//inserts a node with an attribute. XmlNode Objnode =Objxmldoc.selectsinglenode (Mainnode); XmlElement objelement=objxmldoc.createelement (Element); Objelement.setattribute (Attrib, attribcontent); Objelement.innertext=Content;objnode.appendchild (objelement);}/// <summary>///inserts a node without attributes. ///Example: Xmltool.insertelement ("book/author[isbn=\" 0004\ "]", "Content", "aaaaaaaaa");/// </summary>/// <param name= "Mainnode" >Master Node</param>/// <param name= "Element" >Elements</param>/// <param name= "Content" >element Content</param> Public voidInsertelement (stringMainnode,stringElement,stringContent) {//inserts a node without attributes. XmlNode Objnode =Objxmldoc.selectsinglenode (Mainnode); XmlElement objelement=objxmldoc.createelement (Element); Objelement.innertext=Content;objnode.appendchild (objelement);}/// <summary>///INSERT, UPDATE, delete the XML file and save the changes/// </summary> Public voidSave () {//Save your files. Try{objxmldoc.save (strxmlfile);}Catch(System.Exception ex) {Throwex;} objXMLDoc=NULL;}}//=========================================================//Example Application://string strxmlfile = Server.MapPath ("Testxml.xml");//Xmlcontrol xmltool = new Xmlcontrol (strxmlfile);//Data Display//Dglist.datasource = Xmltool.getdata ("book/authors[isbn=\" 0002\ "]");//Dglist.databind ();//Update element content//xmltool.replace ("book/authors[isbn=\" 0002\ "]/content", "PPPPPPP");//Xmltool.save ();//Add a new node//Xmltool.insertnode ("book", "Author", "ISBN", "0004");//xmltool.insertelement ("book/author[isbn=\" 0004\ "]", "Content", "aaaaaaaaa");//xmltool.insertelement ("book/author[isbn=\" 0004\ "]", "Title", "Sex", "Man", "IIIIIIII");//Xmltool.save ();//deletes all content and properties of a specified node//xmltool.delete ("book/author[isbn=\" 0004\ "]");//Xmltool.save ();//deletes a child node of a specified node//xmltool.delete ("book/authors[isbn=\" 0003\ "]");//Xmltool.save ();

C # Common Operations Class Library III (XML operation Class)