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How to remove xmlns attribute from XDocument?

In my C# codebase, I have an XDocument of the form:

<A>
 <B>
   <C xmlns='blabla' yz='blablaaa'> Hi </C>
   <D xmlns='blabla' yz='blablaaa'> How </D>
   <E xmlns='blabla' yz='blablaaa'> Are </E>
   <F xmlns='blabla' yz='blablaaa'> You </F>
 </B>
 <B>
   <C xmlns='blabla' yz='blablaaa'> I </C>
   <D xmlns='blabla' yz='blablaaa'> am</D>
   <E xmlns='blabla' yz='blablaaa'> fine</E>
    <F xmlns='blabla' yz='blablaaa'> thanks</F>
 </B>

Using Linq-to-XML or otherwise, I wanted to remove the xmlns for all the elements contained by elem开发者_StackOverflowent B.

Using the methodology given here: How to Remove specific attributes in XMLDocument?, I was able to remove all attributes except xmlns

What is the best way to remove 'xmlns' attribute from XDocument?


It seems the namespace information are kept in two places in the object tree that represents the XML document in LINQ to XML: as actual xmlns attributes and inside the elements' Names. If you remove it from both places it's gone:

doc.Descendants()
   .Attributes()
   .Where( x => x.IsNamespaceDeclaration )
   .Remove();

foreach (var elem in doc.Descendants())
    elem.Name = elem.Name.LocalName;

(The first part of the code above is copied from now deleted answer by Bertrand Marron.)

If you wanted to remove namespaces from attributes too, that's little more complicated, because their Name is read-only:

foreach (var attr in doc.Descendants().Attributes())
{
    var elem = attr.Parent;
    attr.Remove();
    elem.Add(new XAttribute(attr.Name.LocalName, attr.Value));
}
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