title: Detecting credit card numbers in text
body: <p>I'm trying to find a component or a method which will detect credit card number of varying types in text.</p>
  
  <p>I've found a lot of information on validating a credit card number but I need to be able to take a body of text e.g. a web page and check to see if credit card numbers, bank account numbers and or sort codes are present.</p>
  
  <p>Does anyone know of a component that can help commerical or otherwise?  Specifically my platform is .net c# but if anyone knows of solutions in other technologies it would be good to know those are there.</p>
  
  <p>Thanks for your help.</p>