One XML file is known (bookstore.xml) is as follows:
Oberon's legacy </ title> <author> Corets, EVA </ author> <price> 5.95 </ price> </ book> </ bookstore></p>
<p>1. Insert a <book> node into the <BookStore> node:</p>
<p>XMLDocument Xmldoc = new xmldocument (); xmldoc.load ("BookStore.xml");</p>
<p>XMLNode root = xmldoc.selectsinglenode ("bookstore"); // Find <bookstore> Xmlelement XE1 = Xmldoc.createElement ("BOOK"); // Create a <book> Node Xe1.setttribute ("Genre", "Li Zan Hong") ; // Set the node GENRE attribute XE1.SetaTribute ("ISBN", "2-3631-4"); // Setting the node ISBN property</p>
<p>XMLELEMENT XESUB1 = XMLDoc.createElement ("Title"); Xesub1.innerText = "CS From Getting Started to Wen"; // Settings Text Node XE1.AppendChild (Xesub1); // Add to <Book> Node XMLELEMENT XESUB2 = XMLDoc. CreateElement ("author"); Xesub2.innertext = "Waiting"; Xe1.Appendchild (Xesub2); XMLELEMENT XESUB3 = XMLDoc.createElement ("price"); XESUB3.INNERTEXT = "58.3"; XE1.Appendchild (Xesub3);</p>
<p>Root.appendchild (xe1); // Add to <BookStore> Node XMLDoc.save ("BookStore.xml");</p>
<p>/ / =======================================================================================</p>
<p>The result is:</p>
<p><? XML Version = "1.0" encoding = "GB2312"?> <bookstore> <book genre = "fantasy" ISBN = "2-3631-4"> <title> Oberon's legacy </ title> <author> Corets, EVA </ author> <price> 5.95 </ price> </ book> <book genre = "李赞红" ISBN = "2-3631-4"> <title> CS from getting started to master </ title> <author> 捷</ author> <price> 58.3 </ price> </ book> </ bookstore> 2, modify the node: Change the GENRE value of the GENRE attribute value "Le Li Zanhong" to "Update Li Zanli", the child of the node The text of the node <author> is modified to "Ya Sheng".</p>
<p>XmlNodelist NodeList = XmLDoc.selectsinglenode ("BookStore"). ChildNodes; // Get all child nodes for the BookStore node Foreach (XMLNode Xn In nodelist) // Traverse all child nodes {xmlelement XE = (xmlelement) xn; // Fander node Type Convert to XMLELEMENT Type IF (Xe.GetaTRibute ("Genre") == "Li Zanhong") // If the GENRE attribute value is "Li Zanhong" {xe.setttribute ("genre", "Update Li Zan Hong"); // Modify This attribute is "Update Li Zan Hong"</p>
<p>XMLNodelist NLS = XE.ChildNodes; // Continue all child nodes of the XE child node Foreach (XMLNode XN1 in NLS) // Traversed {XMLELEMENT XE2 = (XMLELEMENT) XN1; // Conversion Type IF (Xe2.Name == "AUTHOR ") // If you find {xe2.innerText =" Amazheng "; // modify break; // can be used to find out.}} Break;}}</p>
<p>XMLDoc.save ("BookStore.xml"); // Save.</p>
<p>/ / =========================================================================================================================================================================================== ==</p>
<p>The last result is:</p>
<p><? XML Version = "1.0" encoding = "GB2312"?> <bookstore> <book genre = "fantasy" ISBN = "2-3631-4"> <title> Oberon's legacy </ title> <author> Corets, EVA </ author> <price> 5.95 </ price> </ book> <book genre = "Update Li Zanli" ISBN = "2-3631-4"> <title> CS from getting started </ title> <author> Sheng </ author> <price> 58.3 </ price> </ book> </ bookstore> 3, delete <book genre = "fantasy" ISBN = "2-3631-4"> Node GENRE attribute, delete <book genre = "Update Li Zanli" ISBN = "2-3631-4"> node.</p>
<p>XMLNodelist XNL = XmLDoc.selectsinglenode ("BookStore"). ChildNodes;</p>
<p>Foreach (XMLNode XN IN XNL) {XMLELEMENT XE = (XMLELEMENT) XN; IF (Xe.GetaTribute ("genre") == "fantasy" {xe.removeattribute ("genre"); // Delete Genre attribute} else IF (Xe.GetaTRibute ("genre") == "Update Li Zanli") {xe.removeall (); // Delete the entire content of the node}} Xmldoc.save ("BookStore.xml");</p>
<p>/ / =================================================== The final result is:</p>
<p><? XML Version = "1.0" encoding = "GB2312"?> <bookstore> <book isbn = "2-3631-4"> <title> Oberon's legacy </ title> <author> corets, evA </ author> < Price> 5.95 </ price> </ book> <book> </ book> </ bookstore></p>
<p>4, display all data.</p>
<p>XMLNode XN = Xmldoc.selectsinglenode ("BookStore");</p>
<p>XMLNodelist XNL = xn.childNodes; Foreach (XMLNode XNF in XNL) {XMLELEMENT XE = (XMLELEMENT) XNF; Console.WriteLine (Xe.GetaTribute ("genre")); // Display attribute value console.writeline (Xe.GetaTRibute "ISBN")); XMLNodelist XNF1 = XE.ChildNodes; Foreach (XMLNode XN2 in Xnf1) {Console.WriteLine (xn2.innerText); // Display sub-node text}}</p></div><div class="text-center mt-3 text-grey">
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