Hi all,

I want to write a class which define some frequent XML operations. For
example a method named "getElementByAttribute (string attrName, string
attrVal)" should return an XmlElement object which includes first element in
the document which has same attribute name and value as method parameters
define. Is there any easy way of this other than recursively scan nodes of
document?

Kürþat wrote:

I want to write a class which define some frequent XML operations. For
example a method named "getElementByAttribute (string attrName, string
attrVal)" should return an XmlElement object which includes first element in
the document which has same attribute name and value as method parameters
define. Is there any easy way of this other than recursively scan nodes of
document?

Well the DOM implementation in .NET has XPath supports with SelectNodes
and SelectSingleNode meaning many such tasks like the one described
above could be "implementing" by delegating to a SelectSingleNode call
with the proper XPath expression e.g.
SelectSingleNode("//*[@" + attrName + " = '" + attrValue + "']")
In reality you have some more work to prevent errors when e.g. attrValue
contains a single quote '. But I hope you get the idea.
There is of course also the problem with XML with namespaces where the
attribute name could be a qualified name with prefix, colon, and local
name, if you really want to solve that in general then you need to take
that into account as well.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/