How to Efficiently Remove XML Namespaces in C#?

Efficiently remove XML element namespace in C#

Removing the namespace of an XML element is a common task, and C# provides a straightforward solution.

Interface definition

First, define an interface to implement the required functionality:

<code class="language-csharp">public interface IXMLUtils
{
    string RemoveAllNamespaces(string xmlDocument);
}</code>

Example XML data

The following XML data is used as an example:

<code class="language-xml"><?xml version="1.0" encoding="utf-16"?><arrayofinserts xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><insert><offer xmlns="http://schema.peters.com/doc_353/1/Types">0174587</offer><type2 xmlns="http://schema.peters.com/doc_353/1/Types">014717</type2><supplier xmlns="http://schema.peters.com/doc_353/1/Types">019172</supplier><id_frame xmlns="http://schema.peters.com/doc_353/1/Types"></id_frame><type3 xmlns="http://schema.peters.com/doc_353/1/Types"><type2></type2><main>false</main></type3><status xmlns="http://schema.peters.com/doc_353/1/Types">Some state</status></insert></arrayofinserts></code>

Recursive function

The core function for removing namespaces is recursive and works as follows:

<code class="language-csharp">private static XElement RemoveAllNamespaces(XElement xmlDocument)
{
    if (!xmlDocument.HasElements)
    {
        XElement xElement = new XElement(xmlDocument.Name.LocalName);
        xElement.Value = xmlDocument.Value;

        foreach (XAttribute attribute in xmlDocument.Attributes())
            xElement.Add(attribute);

        return xElement;
    }
    return new XElement(xmlDocument.Name.LocalName, xmlDocument.Elements().Select(el => RemoveAllNamespaces(el)));
}</code>

It iterates the XML structure, removes namespaces, and preserves element content and attributes.

How to use

Using the interface and function defined previously, you can call the XML namespace removal function like this:

<code class="language-csharp">string result = RemoveAllNamespaces(xmlDocument);</code>

Output results

Final result after removing the namespace from the example XML:

<code class="language-xml"><?xml version="1.0" encoding="utf-16"?><arrayofinserts><insert><offer>0174587</offer><type2>014717</type2><supplier>019172</supplier><id_frame></id_frame><type3><type2></type2><main>false</main></type3><status>Some state</status></insert></arrayofinserts></code>

Conclusion

Using C#'s XElement classes and recursive functionality, you can effectively remove namespaces from XML documents, making it easier to manipulate and process data.

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