How to remove new line characters from a string?

I have a string in the following format

string s = "This is a Test String.\n This is a next line.\t This is a tab.\n'

I want to remove all the occurrences of `\n` and `\r` from the string above.

I have tried `string s = s.Trim(new char[] {'\n', '\r'}); ` but it didn't help.

If speed and low memory usage are important, do something like this:

var sb = new StringBuilder(s.Length);

foreach (char i in s)
if (i != '\n' && i != '\r' && i != '\t')
sb.Append(i);

s = sb.ToString();

You want to use `String.Replace` to remove a character.

s = s.Replace("\n", String.Empty);
s = s.Replace("\r", String.Empty);
s = s.Replace("\t", String.Empty);

Note that `String.Trim(params char[] trimChars)` only removes leading and trailing characters in `trimChars` from the instance invoked on.

You could make an extension method, which avoids the performance problems of the above of making lots of temporary strings:

static string RemoveChars(this string s, params char[] removeChars) {
Contract.Requires<ArgumentNullException>(s != null);
Contract.Requires<ArgumentNullException>(removeChars != null);
var sb = new StringBuilder(s.Length);
foreach(char c in s) {
if(!removeChars.Contains©) {
sb.Append©;
}
}
return sb.ToString();
}

I like to use regular expressions. In this case you could do:

string replacement = Regex.Replace(s, @"\t|\n|\r", "");



Regular expressions aren't as popular in the .NET world as they are in the dynamic languages, but they provide a lot of power to manipulate strings.

FYI,

Trim() does that already.

The following LINQPad sample:

void Main()
{
var s = " \rsdsdsdsd\nsadasdasd\r\n ";
s.Length.Dump();
s.Trim().Length.Dump();
}

Outputs:

23
18

I know this is an old post, however I thought I'd share the method I use to remove new line characters.

s.Replace(Environment.NewLine, "");


*References:*

[MSDN String.Replace Method][1] and [MSDN Environment.NewLine Property][2]

[1]:

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[2]:

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