Comments on: Remove Whitespace from C# Strings

By: Rick B

Rick B — Sat, 04 Sep 2010 17:12:28 +0000

public static class StringExtensions
{
public static string StripPunctuation(this string s)
{
var sb = new StringBuilder();
foreach (char c in s)
{
if (!char.IsPunctuation(c))
sb.Append(c);
}
return sb.ToString();
}

public static string StripWhiteSpace(this string s)
{
var sb = new StringBuilder();
foreach (char c in s)
{
if (!char.IsWhiteSpace(c))
sb.Append(c);
}
return sb.ToString();
}
}

By: SKiPP

SKiPP — Mon, 26 Apr 2010 13:44:21 +0000

http://en.wikipedia.org/wiki/Regular_expression#POSIX_character_classes

By: SKiPP

SKiPP — Mon, 26 Apr 2010 13:44:03 +0000

yes, cause "[ \t\r\n\v\f]" not the only one's symbols which can be interpreted as whitespace

By: Simon

Simon — Mon, 26 Apr 2010 13:09:34 +0000

@SKIPP: So you are claiming your 20 lines of code are better than this article's one line? Regex works great and is relatively fast. Also note that your method is wholly inefficient because it scans the source string for every whitespace character, instead of the other way around.

By: SKiPP

SKiPP — Mon, 26 Apr 2010 13:02:27 +0000

for previous post one line: string macString = textBox1.Text.Replace( ":", "" ).Replace("-", "").Replace(" ", "");

By: SKiPP

SKiPP — Mon, 26 Apr 2010 12:59:57 +0000

cause String.WhitespaceChars may be unavailable

use this array:
string[] whitespaceChars = new string[] {
char.ConvertFromUtf32(9),
char.ConvertFromUtf32(10),
char.ConvertFromUtf32(11),
char.ConvertFromUtf32(12),
char.ConvertFromUtf32(13),
char.ConvertFromUtf32(32),
char.ConvertFromUtf32(133),
char.ConvertFromUtf32(160),
char.ConvertFromUtf32(5760),
char.ConvertFromUtf32(8192),
char.ConvertFromUtf32(8193),
char.ConvertFromUtf32(8194),
char.ConvertFromUtf32(8195),
char.ConvertFromUtf32(8196),
char.ConvertFromUtf32(8197),
char.ConvertFromUtf32(8198),
char.ConvertFromUtf32(8199),
char.ConvertFromUtf32(8200),
char.ConvertFromUtf32(8201),
char.ConvertFromUtf32(8202),
char.ConvertFromUtf32(8203),
char.ConvertFromUtf32(8232),
char.ConvertFromUtf32(8233),
char.ConvertFromUtf32(12288),
char.ConvertFromUtf32(65279)};

By: SKiPP

SKiPP — Mon, 26 Apr 2010 12:16:00 +0000

it is better solution,
if we have string s:
StringBuilder sb = new StringBuilder(s);
foreach (char wc in in string.WhitespaceChars)
sb.Replace(wc, ' '); // replace with space
s = sb.ToString();

By: Jeff O'Reilly

Jeff O'Reilly — Thu, 03 Dec 2009 23:16:00 +0000

Thanks so much. I've been trying to clean MAC addresses so that it doesn't matter if you hand it "0011223344", or "00:11:22:33:44", or "00 11 22 33 44". My button_click code... string macString = textBox1.Text.Replace( ":", "" ); macString = macString.Replace("-", ""); macString = macString.Replace(" ", ""); WakeFunction(macString);

By: Maxx the Axe

Maxx the Axe — Wed, 02 Dec 2009 06:35:45 +0000

I think a better approach is to use the Split function and throw away the blank tokens. Then you can re-concatenate the tokens with or without a single space in between (as in, normal sentence spacing).

By: Robert

Robert — Tue, 29 Sep 2009 07:49:48 +0000

Thanks very much.

I want something like this:
If below is my string
ROBERT EATS MEAT.

Write a C# Code to Extract the first Letter, and add it to the last word. e.g i want to return
RMEAT.

How do i do that?

thanks in advance