Regex + Remove all text before match

Question

I\'m trying to figure out a way to remove all text in a string before match in Regex. I\'m coding this in C#.

For example, if the string is \"hello, test matching\

Answer 1

You can use positive lookahead to match a string but not capture it:

(?=test)

So you want to capture the stuff before the last occurrence of test:

^.*(?=test)

If you want to make it so that it is the first occurrence of test, use lazy matching:

^.*?(?=test)