c# - Add new child to existing child -

so have kind of xml file:

<?xml version="1.0" encoding="utf-8"?> <root>  <project1>  <students>    <student>      <name>test2</name>      <studentnum>01</studentnum>    </student>  </students> </project1> </root> 

to add new student xml file, use code (c#)

xmldocument doc = new xmldocument(); doc.load(server.mappath("datastorage.xml")); xmlelement student = doc.createelement("student");  xmlelement name = doc.createelement("name"); xmltext xmlname = doc.createtextnode(txtstudentname1.text);  xmlelement studentnum = doc.createelement("studentnum"); xmltext xmlstudentnum = doc.createtextnode(txtstudentnum1.text);  name.appendchild(xmlname); studentnum.appendchild(xmlstudentnum);  student.appendchild(name); student.appendchild(studentnum);  doc.documentelement.appendchild(student);  doc.save(server.mappath("datastorage.xml")); 

but problem is, adds new student root, not project1/students parant. how do this?

i've seen solutions xmltextwriter, not included anymore in 4.5...

i find using linq xml easier

var xdoc = xdocument.load(filename); xdoc.descendants("project1").descendants("students")     .first()     .add(new xelement("student",                  new xelement("name","test3"),                 new xelement("studentnum","03")));  xdoc.save(filename); 

output:

<?xml version="1.0" encoding="utf-8"?> <root>   <project1>     <students>       <student>         <name>test2</name>         <studentnum>01</studentnum>       </student>       <student>         <name>test3</name>         <studentnum>03</studentnum>       </student>     </students>   </project1> </root>