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

You can achieve this with a regular expression. Here's an extension method with it:

    public static string[] SplitAndKeepDelimiter(this string input, string delimiter)
    {
        MatchCollection matches = Regex.Matches(input, @"[^" + delimiter + "]+(" + delimiter + "|$)", RegexOptions.Multiline);
        string[] result = new string[matches.Count];
        for (int i = 0; i < matches.Count ; i++)
        {
            result[i] = matches[i].Value;
        }
        return result;
    }

I'm not sure if this is a better solution. Yours is very compact and simple.