error during xml pursing

dears
during xml pursing i face this erro
found invaled character


Line may be important
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>


Note:-
i don't need to solve this problem
what i need List contain all invaled character and it

It's very difficult to respond without more details, particularly the error that you're getting, and perhaps also a simple example of both the XML and the XSLT.
Sweet gabru (http://sweetgabru.blogspot.com);)