How do I remove \r\n from string in C#?

Question

I am trying to figure out an easy way remove \r\n from a string.

Example: text = "this.is.a.string.\r\nthis.is.a.string\r\n"

I tried:

text.Replace("\r\n", "") and text.Replace("\r\n", string.Empty), but it doesn't work. \r\n is still in the string...

The result should be: "this.is.a.string.this.is.a.string"

possible duplicate of [How can I remove "\r\n" from a string in c#? Can I use a regEx?](http://stackoverflow.com/questions/1981947/how-can-i-remove-r-n-from-a-string-in-c-can-i-use-a-regex) — Pierre-Luc Pineault, Jul 15 '14 at 22:38
do you assign result of `text.Replace()` call somewhere? It does not replace it in-place — zerkms, Jul 15 '14 at 22:39
you must realize that strings are immutable,every "string method" you use returns to you a NEW string so you must assign to a string variable that be your text variable or a new one. — terrybozzio, Jul 15 '14 at 22:43
Better solution has given here pl check https://stackoverflow.com/a/1982317/2208645 — Suraj Bhatt, Dec 10 '20 at 07:05

score 32 · Accepted Answer · edited Mar 18 '19 at 15:41

32

This reads better:

text = text.Replace(System.Environment.NewLine, string.Empty);

edited Mar 18 '19 at 15:41

Peter Mortensen

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answered Jul 15 '14 at 22:40

Luke Hutton

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score 5 · Answer 2 · edited Mar 18 '19 at 15:40

5

Strings in .NET are immutable and so you cannot change an existing string - you can only create a new one. The Replace method returns the modified result, i.e.

text = text.Replace(System.Environment.NewLine, string.Empty);
text = JObject.Parse(text);

edited Mar 18 '19 at 15:40

Peter Mortensen

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answered Jan 15 '19 at 10:58

Ramya Prakash Rout

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Thank you for this code snippet, which might provide some limited, immediate help. A [proper explanation would greatly improve its long-term value](//meta.stackexchange.com/q/114762/206345) by showing _why_ this is a good solution to the problem, and would make it more useful to future readers with other, similar questions. Please [edit] your answer to add some explanation, including the assumptions you've made. – Suraj Rao Jan 15 '19 at 11:02
I had used this code in a web API where \r\n was not working. input: {\r\n \"LOINC\": [\r\n {\r\n \"LOINC_NUM\": \"10362-2\",\r\n \"COMPONENT\": \"Endomysium Ab.IgA\",\r\n \"PROPERTY\": \"PrThr\",\r\n \"TIME_ASPCT\": \"Pt\",\r\n }\r\n ]\r\n}; output: { "LOINC": [ { "LOINC_NUM": "10362-2", "COMPONENT": "Endomysium Ab.IgA", "PROPERTY": "PrThr", "TIME_ASPCT": "Pt" } ] } – Ramya Prakash Rout Jan 29 '19 at 11:50
The best answer so far – Alex Jun 19 '23 at 11:58

score 2 · Answer 3 · edited Aug 21 '18 at 18:51

2

Are you setting the return value back to the variable?

text = text.Replace(@"\r\n", "");

edited Aug 21 '18 at 18:51

gunr2171

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answered Jul 15 '14 at 22:39

ps2goat

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score 2 · Answer 4 · edited Aug 21 '18 at 18:51

2

It returns a value. You need to say text = ...

text = text.Replace(@"\r\n", "");

edited Aug 21 '18 at 18:51

gunr2171

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answered Jul 15 '14 at 22:39

Alex

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score 1 · Answer 5 · edited Mar 18 '19 at 15:38

1

Try this:

text = text.Replace(System.Environment.NewLine, "");

edited Mar 18 '19 at 15:38

Peter Mortensen

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answered May 07 '18 at 06:08

raghu sathvara

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score 0 · Answer 6 · answered Jun 23 '16 at 10:15

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Try this.

text = text .Replace("\\r\\n", "");

It's work for me ;)

answered Jun 23 '16 at 10:15

Mardika Reza Setiawan

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score -1 · Answer 7 · answered Oct 08 '15 at 07:39

-1

You better try this.

text = text.Replace("\r\n", "");

Hope this work.

answered Oct 08 '15 at 07:39

Zin Win Htet

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How do I remove \r\n from string in C#?

7 Answers7

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