Removing carriage return and linefeed from the end of a string in C#

Question

How do I remove the carriage return character (\r) and the Unix newline character(\n) from the end of a string?

RichieHindle · Accepted Answer · 2009-05-16T19:02:04.067

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This will trim off any combination of carriage returns and newlines from the end of s:

s = s.TrimEnd(new char[] { '\r', '\n' });

Edit: Or as JP kindly points out, you can spell that more succinctly as:

s = s.TrimEnd('\r', '\n');

edited May 16 '09 at 19:02

answered May 16 '09 at 18:55

RichieHindle

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Take note of the params keyword in the declaration of TrimEnd, it let's you pass multiple instances of a character instead of the array. http://msdn.microsoft.com/en-us/library/w5zay9db(VS.71).aspx – JP Alioto May 16 '09 at 18:59
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How about this: s = s.TrimEnd(System.Environment.NewLine.ToCharArray()); – Ε Г И І И О Oct 06 '12 at 21:11
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I've been writing c# since v1.0 came out (10 years ago). Now you tell me about TrimEnd. Doh! – s15199d Dec 28 '12 at 20:05
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Just out of interest, all you really need is `s = s.TrimEnd()` - as the docs say: _If trimChars is null or an empty array, Unicode white-space characters are removed instead._ - see [String.TrimEnd](http://msdn.microsoft.com/en-gb/library/system.string.trimend.aspx) – Stuart Wood Mar 12 '13 at 12:37
@StuartWood: ...which is not what Avik asked for. He asked specifically for `'\r'` and `'\n'` and nothing else, not the space character `' '` for instance. – RichieHindle Mar 12 '13 at 13:11
http://stackoverflow.com/questions/4973524/how-to-remove-extra-returns-and-spaces-in-a-string-by-regex/4974031#4974031 – Allen Jan 29 '15 at 15:55
Here is the correct answer: https://stackoverflow.com/a/35890472/229930 – Dean Kuga Aug 13 '21 at 16:54

score 34 · Answer 2 · answered May 16 '09 at 18:57

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This should work ...

var tst = "12345\n\n\r\n\r\r";
var res = tst.TrimEnd( '\r', '\n' );

answered May 16 '09 at 18:57

JP Alioto

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score 21 · Answer 3 · edited Aug 05 '20 at 13:32

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String temp = s.Replace("\r\n","").Trim();

s being the original string. (Note capitals)

edited Aug 05 '20 at 13:32

dashnick

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answered May 16 '09 at 19:05

Crash893

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That will also: 1) Remove \r\n from the middle of the string, 2) Remove any whitespace characters from the start of the string, and 3) remove any whitespace characters from the end of the string. – RichieHindle May 16 '09 at 20:48
True, I assumed only one /r/n at the end. It wasn't mentioned in the orginal post. I'm not sure that warrents a -1 vote – Crash893 May 17 '09 at 00:16
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Is using `replace()` then `trim()` not overkill when `TrimEnd()` can do the job alone, or am I missing something? – ᴍᴀᴛᴛ ʙᴀᴋᴇʀ May 28 '14 at 09:07
great suggestion @MattBaker – Crash893 Feb 26 '17 at 20:53

score 20 · Answer 4 · answered Feb 20 '13 at 06:11

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If you are using multiple platforms you are safer using this method.

value.TrimEnd(System.Environment.NewLine.ToCharArray());

It will account for different newline and carriage-return characters.

answered Feb 20 '13 at 06:11

Alex Wiese

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JP's method -- `tst.TrimEnd( '\r', '\n' )` -- is reasonably "safe" in practice since major EOLs are [currently] just different combos of `\r` and `\n`, but alexw's is the "right" answer. *Let the CLR tell you what chars are in this platform's newline.* [EOL hasn't always been combos of 0Ds and 0As](http://en.wikipedia.org/wiki/Newline#Representations) – ruffin Apr 26 '14 at 15:23
I used to use `Environment.NewLine` but it didn't seem to handle instances where `\r` was present without `\n`. `TrimEnd('r','\n')` seems to be more reliable in this case. – ᴍᴀᴛᴛ ʙᴀᴋᴇʀ May 28 '14 at 09:09
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It could be that this is actually a cross-platform issue, and dec needs to specifically remove both \r \n, irrespective of what the system environment says. – Andrew Hill Apr 20 '15 at 00:20

score 10 · Answer 5 · answered Apr 22 '15 at 22:49

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s.TrimEnd();

The above is all I needed to remove '\r\n' from the end of my string.

The upvoted answer seems wrong to me. Firstly, it didn't work when I tried, secondly, if it did work I would expect that s.TrimEnd('\r', '\n') would only remove either a '\r' or a '\n', so I'd have to run it over my string twice - once for when '\n' was at the end and the second time for when '\r' was at the end (now that the '\n' was removed).

answered Apr 22 '15 at 22:49

martinp999

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This does work to remove \r and \n but will also remove all white space, so in some cases may go too far. Note the doc for this method: " If trimChars is null or an empty array, Unicode white-space characters are removed instead." – Craig Oct 22 '20 at 12:21

score 4 · Answer 6 · answered Oct 01 '09 at 15:28

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For us VBers:

TrimEnd(New Char() {ControlChars.Cr, ControlChars.Lf})

answered Oct 01 '09 at 15:28

Simon

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score 4 · Answer 7 · answered Mar 24 '11 at 20:17

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string k = "This is my\r\nugly string. I want\r\nto change this. Please \r\n help!";
k = System.Text.RegularExpressions.Regex.Replace(k, @"\r\n+", " ");

answered Mar 24 '11 at 20:17

vnRock

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score 4 · Answer 8 · answered May 16 '09 at 18:57

If there's always a single CRLF, then:

myString = myString.Substring(0, myString.Length - 2);

If it may or may not have it, then:

Regex re = new Regex("\r\n$");
re.Replace(myString, "");

Both of these (by design), will remove at most a single CRLF. Cache the regex for performance.

score 3 · Answer 9 · answered Jan 12 '13 at 19:11

This was too easy -- for me I'm filtering out certain email items. I'm writing my own custom email junk filter. With \r and/or \n in the string it was wiping out all items instead of filtering.

So, I just did filter = filter.Remove('\n') and filter = filter.Remove('\r'). I'm making my filter such that an end user can use Notepad to directly edit the file so there's no telling where these characters might embed themselves -- could be other than at the start or end of the string. So removing them all does it.

The other entries all work but Remove might be the easiest?

I learned quite a bit more about Regex from this post -- pretty cool work with its use here.

Looks like you could do just `filter = filter.Remove('\n').Remove('\r');` — John Saunders, Jan 12 '13 at 19:32

score 2 · Answer 10 · answered Nov 14 '17 at 22:40

I use lots of erasing level

String donen = "lots of stupid whitespaces and new lines and others..."

//Remove multilines
donen = Regex.Replace(donen, @"^\s+$[\r\n]*", "", RegexOptions.Multiline);
//remove multi whitespaces
RegexOptions options = RegexOptions.None;
Regex regex = new Regex("[ ]{2,}", options);
donen = regex.Replace(donen, " ");
//remove tabs
char tab = '\u0009';
donen = donen.Replace(tab.ToString(), "");
//remove endoffile newlines
donen = donen.TrimEnd('\r', '\n');
//to be sure erase new lines again from another perspective
donen.Replace(Environment.NewLine, "");

and now we have a clean one row

score 2 · Answer 11 · edited Jun 03 '20 at 14:58

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This is what I got to work for me.

s.Replace("\r","").Replace("\n","")

edited Jun 03 '20 at 14:58

Paul Roub

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answered Jun 03 '20 at 14:52

Jordan Mahsman

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score 0 · Answer 12 · edited Oct 17 '12 at 14:59

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varName.replace(/[\r\n]/mg, '')

edited Oct 17 '12 at 14:59

John Conde

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answered Oct 17 '12 at 14:57

Pat

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score 0 · Answer 13 · answered Jul 24 '22 at 23:05

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If you use the nuget IvanStoychev.Useful.String.Extensions you can do:

s = s.TrimEnd(Environment.Newline);

It adds an overload of TrimEnd that takes a string.

answered Jul 24 '22 at 23:05

Tessaract

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Removing carriage return and linefeed from the end of a string in C#

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