Easiest way to split a string on newlines in .NET?

user_117069 0
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I need to split a string into newlines in .NET and the only way I know of to split strings is with the Split method. However that will not allow me to (easily) split on a newline, so what is the best way to do it?

split string .net c#
17 Answers

Starting with .NET 6 we can use the new String.ReplaceLineEndings() method to canonicalize cross-platform line endings, so these days I find this to be the simplest way:

var lines = input
  .ReplaceLineEndings()
  .Split(Environment.NewLine, StringSplitOptions.None);
user_62755300

Examples here are great and helped me with a current "challenge" to split RSA-keys to be presented in a more readable way. Based on Steve Coopers solution:

    string Splitstring(string txt, int n = 120, string AddBefore = "", string AddAfterExtra = "")
    {
        //Spit each string into a n-line length list of strings
        var Lines = Enumerable.Range(0, txt.Length / n).Select(i => txt.Substring(i * n, n)).ToList();
        
        //Check if there are any characters left after split, if so add the rest
        if(txt.Length > ((txt.Length / n)*n) )
            Lines.Add(txt.Substring((txt.Length/n)*n));

        //Create return text, with extras
        string txtReturn = "";
        foreach (string Line in Lines)
            txtReturn += AddBefore + Line + AddAfterExtra +  Environment.NewLine;
        return txtReturn;
    }

Presenting a RSA-key with 33 chars width and quotes are then simply

Console.WriteLine(Splitstring(RSAPubKey, 33, "\"", "\""));

Output:

Output of Splitstring();

Hopefully someone find it usefull...

user_86663810
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