How can I use Regex against a TextReader?
.net, regex
Solution
No, a regular expression may need to do backtracking. As a stream only is read forward it would mean that it had to keep the entire stream in memory anyway. Even if you have a regular expression that wouldn't backtrack, the engine isn't built for this.
Besides, regular expressions isn't very fast anyway. You should look for a pattern matching method that is designed for reading streams.
Problem
What's the best way to look for a pattern in a (potentially) very large text. I could use Regex but it accepts a string as an argument. Is there a way to use it with a TextReader or some kind of stream instead?