Remove xmlns attribute from xml

Question

In below Xml, I tried to delete the xmlns attribute but, its unable to populate under, xmlNode.Attributes still appear under OuterXml and final XmlDocument.

... 
<z:Datac knid="2" xmlns="http://services/api/"></z:Datac>
...
<z:Datac knid="3" xmlns="http://services/api/"></z:Datac>
....
<z:Datac knid="5" xmlns="http://services/api/"></z:Datac>
....

How to remove xmlns attribute for each z:Datac element?

foreach (var item in nodes)
{
    var xmlnsAttribute = (item.Attributes has "xmlns" attribute)

    if (xmlnsAttribute != null)
    {
        Remove xmlNode...  //not able to reach here as not able to find xmlns.
    }
}

I don't have xml.linq

what have you tried? and are you *tied* to `XmlDocument`? in `XDocument`, `el.Attribute("xmlns")?.Remove();` seems to work... (obviously in real code you'd want to test the xmlns against the element's .Name.Namespace, and only remove if different) — Marc Gravell, Jul 09 '19 at 16:10
the link above is using with xElement from linq.xml.. here it does'nt have. — dsi, Jul 09 '19 at 16:15
yeah, I'm undoing that close-as-duplicate; that's a completely different and incompatible API — Marc Gravell, Jul 09 '19 at 16:16
Where are you getting this XML from? It looks very suspicious; colons are used to separate XML namespaces from tags, and the `xmlns` attribute is used to distinguish namespaces. But these are all wrong in your XML fragment, the `z` namespace is never defined and the `xmlns` attribute does not define a namespace. Either this XML does not use namespaces, is badly corrupted, or you're not showing us the actual XML. — Dour High Arch, Jul 09 '19 at 16:25
Yes,its like this as received stream and loaded with. related namespace on document. — dsi, Jul 09 '19 at 17:57

score 2 · Answer 1 · answered Jul 09 '19 at 16:17

2

I guess you'd want something like:

XmlDocument doc = new XmlDocument();
doc.Load("my.xml");
foreach(var node in doc.DocumentElement.ChildNodes)
{
    var el = node as XmlElement;
    if (el != null)
    {
        if (el.HasAttribute("xmlns"))
        {
            var ns = el.GetAttribute("xmlns");
            if (ns != null && ns != el.NamespaceURI)
            {
                el.RemoveAttribute("xmlns");
            }
        }
    }
}
doc.Save("new.xml");

Obviously you'd probably want to make it query, or issue an all-elements query, in complex scenarios.

answered Jul 09 '19 at 16:17

Marc Gravell

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Problem is, ` if (el.HasAttribute("xmlns"))` does not get true but, el.OuterXml has xmlns and namespaceURI exists. – dsi Jul 09 '19 at 16:22
@dsi I tested it... it worked fine here; if you're seeing it failing in a specific scenario, it would help to post that exact scenario with representative code and xml; if you're saying that it isn't applying to the document/root element - fine: just fix that! – Marc Gravell Jul 09 '19 at 16:24

Remove xmlns attribute from xml

1 Answers1