How to split a string while preserving line endings?

Question

I have a block of text and I want to get its lines without losing the \\r and \\n at the end. Right now, I have the following (suboptimal code):

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Answer 1

The following seems to do the job:

string[] lines =  Regex.Split(tbIn.Text, @"(?<=\r\n)(?!$)");

(?<=\r\n) uses 'positive lookbehind' to match after \r\n without consuming it.

(?!$) uses negative lookahead to prevent matching at the end of the input and so avoids a final line that is just an empty string.