Xdocument trap element outside parent elemet

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using Linq i wan to trap/check if element outside parent.

example:
<doc>
<x><p>text<p></x>--this is correct

<p>some text<p> --this should be inside <x> tag
<x><p>text<p></x>--this is correct
</doc>

expected:
<doc>
<x>
<p>text<p>
</x>
<x>
<p>some text<p>
<p>text<p>
</x>
</doc

What I have tried:

i tried to find it in net but no avail. thanks a lot for the help

Posted 26-Jan-17 19:02pm

Chaegie

Updated 27-Jan-17 2:44am

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Richard Deeming · Answer 1 · 2017-01-27T02:44:00

Simple: find all the <p> nodes that don't have an <x> node as their immediate parent.

C#

IEnumerable<XElement> invalidNodes = document.Descendants("p").Where(p => p.Parent.Name != "x");

Or, if the <p> node can be nested at any depth under an <x> node, check the ancestors:

C#

IEnumerable<XElement> invalidNodes = document.Descendants("p").Where(p => !p.Ancestors("x").Any());