Trying to figure out how to do an xpath that has all values equal to 0.

//Record/AccidentIncome[.=0]

I know this will find ANY instance where AccidentIncome = 0, but I need to
determine if ALL nodes that have //Record/AccidentIncome equal to 0. Stated
another way, I cannot figure out how to do the opposite - determine if any
node has a value greater than zero, which is easy
//Record/AccidentIncome[.>0] - but then use a keyword like not to reverse it
and get a true statement.

So if I have 2 nodes, and one of them has AccidentIncome = 5000, I wish this
statement would become true, but it does not.

not //Record/AccidentIncome[.>0]

Please help.

Derek Hart wrote:
I am not sure I understand what you are trying to achieve. If you have
one element <AccidentIncome>5000</AccidentIncome> then the XPath expression
//Record/AccidentIncome[. > 0]
selects that element and the node-set selected contains that one node.
Thus if you want to determine whether at least one such element exists
then you can count the elements in the node-set either by checking e.g.
xmlDocument.SelectNodes("//Record/AccidentIncome[. > 0]").Count > 0
or by evaluating the XPath expression
count(//Record/AccidentIncome[. > 0]) > 0
You can also convert a node-set to a boolean and only an emtpy node-set
converts to false, otherwise you get true e.g.
boolean(//Record/AccidentIncome[. > 0])
gives true if there is at least one element in the node-set.

--

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