Question

How can I efficiently select all nodes of type x that are not children of a node of type x?

Example with type as p:

<p id="top1">
    <ul>
        <li>Text</li>
        <li>Text</li>
        <li>Text</li>
    </ul>
    <div>
        <p id="sub">
            <p id="sub_sub">
            </p>
        </p>
    </div>
</p>
<div>
    <div>
        <p id="top2">
        </p>
    </div>
</div>

The select should only return nodes with ids top1 and top2

Answer 1

Like this:

elem.Descendants().Where(e => !e.Descendants("p").Any())