writing textbox values to xml file

Question

I have been trying to write textbox value to xml file but could not get it in right format as I wish to have

I am using following code

XDocument Xdoc = new XDocument(new XElement("Users"));
if (System.IO.File.Exists("D:\\Users.xml"))
    Xdoc = XDocument.Load("D:\\Users.xml");
else
    Xdoc = new XDocument();

XElement xml = /*new XElement("Users",*/
new XElement("User",
             new XAttribute("UserId", txtUserId.Text),
             new XAttribute("Password", txtPwd.Text));

if (Xdoc.Descendants().Count() > 0)
    Xdoc.Descendants().First().Add(xml);
else
    Xdoc.Add(xml);

Xdoc.Save("D:\\Users.xml");

Here i m getting xml in this format

<User UserId="Sunny" Password="Sunny">
<User UserId="Sunny" Password="Sunny" />
<User UserId="Sunny" Password="Sunny" />
</User>

But i wanna to have like this

<Users>
  <User>
    <UserId>Sunny</UserId>
    <Password>pwd</Password>
  </User>
  <User>
    <UserId>Sunny</UserId>
    <Password>pwd</Password>
  </User>
</Users>

Answer 1

My own answer

XDocument Xdoc = new XDocument(new XElement("Users"));
        if (System.IO.File.Exists("D:\\Users.xml"))
            Xdoc = XDocument.Load("D:\\Users.xml");
        else
        {
            Xdoc = new XDocument();
            XElement xmlstart = new XElement("Users");
            Xdoc.Add(xmlstart);
        }
        XElement xml = /*new XElement("Users",*/
                       new XElement("User",
          new XElement("UserId", txtUserId.Text),
          new XElement("Password", txtPwd.Text));

        if (Xdoc.Descendants().Count() > 0)
            Xdoc.Descendants().First().Add(xml);
        else
        {
            Xdoc.Add(xml);
        }

        Xdoc.Element("Users").Save("D:\\Users.xml");

This is giving me xml like

<?xml version="1.0" encoding="utf-8"?>
<Users>
  <User>
  <UserId>Sunny</UserId>
  <Password>Sunny</Password>
 </User>
 <User>
   <UserId>Sunny</UserId>
   <Password>Sunny</Password>
 </User>
 <User>
   <UserId>Sunny</UserId>
   <Password>Sunny</Password>
 </User>
</Users>