In C#, Remove Blank lines only at end of multiline string-CodePudding

I have a multiline string that looks something like this:

string line = "one two three.    \r\n\r\n     ## ENDr\n\r\n "

I was thinking I could keep all the blank lines before #END and remove the blank lines at the end of the string using this expression:

string text2 = Regex.Replace(line, @"(\s*\r\n) $", "");

However, it leads to an infinite loop on the Regex.Replace for some reason when i load a similar file into string line...

Any Ideas?

CodePudding user response：

You can use TrimEnd to remove all whitespace characters from the end of a string. Since newlines are considered whitespace, this will chop them off. Any whitespace in the middle will be ignored.

CodePudding user response：

string text2 = Regex.Replace(text, @"[\s\n\r] $", "");
text2  = "\r\n";

CodePudding user response：

string.TrimEnd() is your best bet. New lines and whatnot are characters as far as the string type is concerned, so TrimEnd() will only cull whitespace after the final character