How to get the name of elements/attributes in xml files and write these into another new xml file using LINQ

Question

I am new to c#. Right now I am trying to get the name of some specific elements in an xml file and create a new xml file for these. I have tried with LINQ, so that I can parse the xml and get the name of some elments that I want. I do not want to use console.writeline to output this name. Instead I would like to create a new xml file and save these names in it. Can anyone give me some tips? The following is example data I would like to parse:

<root>
    <Package>
        <Class name="EnterpriseArchitect">
            <Operation/>
        </Class>
        <Class name="ZachmanFramework">
            <Operation/>
        </Class>
    </Package>
</root>

I want to get the attribute name of the element Class and save it in a new xml file like this:

<root>
<EnterpriseArchitect/>
<ZachmanFramework/>
</root>

The following is my c# code, but I can not reach the goal:

XDocument xdoc = XDocument.Load(@"C:\Users\jsc\Desktop\123456.xml");
XDocument xNew = new XDocument();
var datatype = xdoc.Root.Elements("Package").Elements("Class")
            
foreach (var dut in datatype)
{
    var dataTypeName = dut.Attribute("name").Value;
    xNew.Add(new XElement(dataTypeName));
}
            
xNew.Save(@"C:\Users\jsc\Desktop\1234567.xml");   

Answer 1

Please, read my comments to the question.

This should work:

XDocument srcdoc = XDocument.Load("sourceFileName.xml");
List<XElement> names = srcdoc.Descendants("Class")
    .Select(x=> new XElement(x.Attribute("name").Value))
    //.Distinct() //uncomment this if duplicate values aren't allowed
    .ToList();

XDocument newdoc = new XDocument();
XElement root = new XElement("root");
root.Add(names);
newdoc.Add(root);   
newdoc.Save("newFileName.xml");

Good luck!