CODEWITHSUNDEEP
c#xml
Álvaro García
Álvaro García

Reputation: 19366

How to append a new element to an existing XML file with namespace and xsi and xsi:schemalocation?

I know how I can create a new XML file, set the declaration, the name space and add new elements to the root. However, if I want to append elements to an existing file it is added xmlns as attribute of the new element:

<NewElement p3:id="1" idAux="A1" xmlns:p3="http://xyz.com/2006/bbb" xmlns="">

I try to use the loaded the namespace of the document, but that does not work.

How can I add new elements to an existing file and respect the format of the existing elements?

I am using linq to xml.

Thanks.

Upvotes: 0

Views: 452

Answers (1)

fourpastmidnight
fourpastmidnight

Reputation: 4234

Try the following code:

// Assume 'el' is the new element that's created.
XElement el = new XElement("NewElement", new XAttribute("{p3}id", 1), new XAttribute("idAux", "A1"));

The above should create the following:

<NewElement p3:id="1" idAux="A1">

Note that the namespace p3 may be created on the document root element--I'm not sure about that. Also I know that with the old System.Xml API, if you didn't specify a default namespace for your document, then the XmlSerializer would add the xsi and xsd namespaces automatically.

I know in the old Xml API, the correct way to specify a default namespace was to add a XmlNamespaceManager-type property to your class (which is a container for an array of XmlQualifiedName objects) and add a XmlQualifiedName object as follows: new XmlQualifiedName(string.Empty, "urn:your-namespace-name"). You probably need to do something similar for your document using XML-to-LINQ.

I have a SO post about that: XmlSerializer: remove unnecessary xsi and xsd namespaces. HTH.

Upvotes: 1

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