## IXPathNSResolver class

The `XPathNSResolver` interface permit `prefix` strings in 
the expression to be properly bound to `namespaceURI` strings. 
[`IXPathEvaluator`](/svg/python-net/aspose.svg.dom.xpath/ixpathevaluator) can construct an implementation of 
[`IXPathNSResolver`](/svg/python-net/aspose.svg.dom.xpath/ixpathnsresolver) from a node, or the interface may be 
implemented by any application.



The IXPathNSResolver type exposes the following members:

### Methods
| Method | Description |
| :- | :- |
| [lookup_namespace_uri](/svg/python-net/aspose.svg.dom.xpath/ixpathnsresolver/lookup_namespace_uri/#str) | Look up the namespace URI associated to the given namespace prefix. 
<br/>The XPath evaluator must never call this with a `null` or empty 
<br/>argument, because the result of doing this is undefined. |



### See Also
* module [`aspose.svg.dom.xpath`](..)
* class [`IXPathEvaluator`](/svg/python-net/aspose.svg.dom.xpath/ixpathevaluator)
* class [`IXPathNSResolver`](/svg/python-net/aspose.svg.dom.xpath/ixpathnsresolver)