Contains the first child of this node.
Set objXMLDOMNode = oXMLDOMNode.firstChild
HRESULT get_firstChild( IXMLDOMNode **firstChild);
This value depends on the value of the nodeType method.
NODE_ATTRIBUTE, NODE_DOCUMENT, NODE_DOCUMENT_FRAGMENT, NODE_DOCUMENT_TYPE, NODE_ELEMENT, NODE_ENTITY, NODE_ENTITY_REFERENCE | Returns the first child node. If there are no children, returns Null. |
NODE_CDATA_SECTION, NODE_COMMENT, NODE_NOTATION, NODE_PROCESSING_INSTRUCTION, NODE_TEXT | Returns Null. These node types cannot have children. |