Question

I’m trying to insert an element at a specific point within my file, then save that file out. However, I can’t seem to get it right. My XML layout is like this:

<?xml version="1.0" encoding="utf-8"?>
<Settings>
   <Items />
   <Users />
</Settings>

This is my current code:

            XDocument xd = XDocument.Load(@"C:\test.xml");

            var newPosition =  xdoc.Root.Elements("Users");
            //I've tried messing around with newPosition methods


            XElement newItem = new XElement("User",
                new XAttribute("Name", "Test Name"),
                new XAttribute("Age", "34"),

                ); 

            //how can I insert 'newItem' into the "Users" element tag in the XML file?

            xd.Save(new StreamWriter(@"C:\test.xml"));

I’d like to use Linq to XML to insert ‘newItem’ into the tag. Thanks for any help on this.

Answer 1

Just find the Users element, and append it:

// Note that it's singular - you only want to find one
XElement newPosition = xdoc.Root.Element("User");
XElement newItem = new XElement("User",
     new XAttribute("Name", "Test Name"),
     new XAttribute("Age", "34"));

// Add the new item to the collection of children
newPosition.Add(newItem);

Your use of var here was leading you astray – because the type of newPosition in your code was really IEnumerable<XElement>… you were finding all the User elements. (Okay, there would only have actually been one element, but that’s irrelevant… it was still conceptually a sequence.)