I need professional help here... Here's the situation... I have product URL's going to detail pages. On that page it breaks out into sub-sections, at times it also carries extra parameters in the query string other than "v" and "fa"... note that "v" is an alpha-numeric...

Additionally, be aware that the regex expression would also match: Product/Detail AB aspx And will capture just 'A'. You need to change "(.*)/Detail(.*) . aspx" to "(.*)/Detail(.*) \. aspx"; remember that the expression "." means any character, you need to escape...