How to get the last line in simple string variable - C#

Question

I have a simple string variable as follows and I want to get last line from this text.

string mytext ="line1\nline2\nline3";

Please do not offer to use

var lastLine = File.ReadLines("file.txt").Last();

Because the target string is not stored in the file.

Thanks for your help

Answer 1

Split by newline and then do last:

var lastLine = mytext.Split('\n').Last();

Answer 2

Try this:

int idx = mytext.LastIndexOf('\n');

if (idx != -1)
{
    var rsult = mytext.Substring(idx + 1);
}