Does .NET XmlDocument really support W3C DOM Level 2?

Question

From the MSDN documentation: This class implements the W3C Document Object Model (DOM) Level 1 Core and the Core DOM Level 2.

But AFAIK the W3C DOM Level 2 language bindings (IDL) define methods like getElementsByTagNameNS (which is missing for XmlDocument class in .NET).

Is .NET XmlDocument not implementing W3C DOM Level 2 (completely) or I am missing something? Do the methods need to be named like in the language bindings of the W3C?

Thanks!

Answer 1

From the specification of WC3 DOM Level 2:

• getElementsByTagName

  Returns a NodeList of all the Elements with a given tag name in the order in which they are encountered in a preorder traversal of the Document tree.

• getElementsByTagNameNS (introduced in DOM Level 2)

  Returns a NodeList of all the Elements with a given local name and namespace URI in the order in which they are encountered in a preorder traversal of the Document tree.

In the XmlDocument these two different cases are handled using overloads:

XmlDocument.GetElementsByTagName(string name)

XmlDocument.GetElementsByTagName(string localName, string namespaceUri)

I'm not sure whether this qualifies as being compliant with the spec but it perfectly fits the capabilities of an object-orient language such as C#.