HowTo: check for existence of xml attributes to prevent exception event from firing

[Mike-deerenews]

I would like to check for the existence of an attribute in order to prevent
an exception from firing.

Could someone provide an example?

tia
Mike

 

[Morten Wennevik]

Hi Mike,

You can try selecting a single node and specify the attribute in an XPath
query. If the attribute is not there, the method will return null.

"/Employees//@ID" will select nodes under the Employees node containing
the ID attribute

For more on XPath queries, read
http://www.developer.com/net/net/article.php/3383961

 

[Christof Nordiek]

"/Employees//@ID" will select nodes under the Employees node containing
the ID attribute

Wouldn't that select the ID attributes of those nodes?

 

[Morten Wennevik]

Well, yeah, but if you use this XPath in SelectNodes the return value
would the nodes those attributes belong to.