Gets the namespace URI of this node.
Assembly: System.Xml (in System.Xml.dll)
This is the namespace URI specified at creation time. For example, NamespaceURI is urn:samples for the element <bk:book xmlns:bk= "urn:samples">
An attribute does not inherit its namespace from the element it is attached to. If an attribute is not explicitly given a namespace, it simply has no namespace.
Available since 10
Available since 1.1