string.Trim() function in c#

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why this trim function is not working..

C#

string str = content.trim(new char[] {',', '.', ';'})

i want to remove all the commas, full stops and semi-colons from my string, but this function is not working....

Posted 26-Jun-14 0:15am

ShobuGpta

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3 solutions

Solution 2

Trim will remove character from start or end. Not in between characters are removed by Trim function.
You can use Replace or Remove functions or Reg Ex expression.

C#

Regex pattern = new Regex("[;,.]");
string str = pattern.Replace(content, "");

Posted 26-Jun-14 0:22am

pradiprenushe

Updated 26-Jun-14 0:26am

v3

Solution 1

Trim only works on the left and right ends of the string, it doesn't do anything about the middle!

Try a regex:

C#

string without = Regex.Replace(inputString, @"[,\.;]+", "");

Posted 26-Jun-14 0:22am

OriginalGriff

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Prasad Avunoori · Accepted Answer · 2014-06-26T00:28:00

Solution 4

You are supposed to use Replace() method instead of Trim()

Trim eliminates leading and trailing whitespace. We need to remove whitespace from the beginning or ending of a string. We use the .NET Framework's Trim method to do this efficiently. This method removes any characters specified.

C#

string input = "Hi,I'm a sentence having special characters.;";

input = input.Replace("'", "").Replace(",", "").Replace(";", "").Replace(".", "");

Posted 26-Jun-14 0:28am

Prasad Avunoori

Comments

ShobuGpta 26-Jun-14 7:20am

this was much easier thanks

Prasad Avunoori 26-Jun-14 7:59am

But, Solution1 by OriginalGriff was better as it used less code than me.

OriginalGriff 26-Jun-14 15:13pm

More to the point, it generates fewer interim strings - which can be significant both in memory and time when the input gets large.

ShobuGpta 26-Jun-14 8:03am

yeah, but i never understand these Regex patterns, too complicated

OriginalGriff 26-Jun-14 15:14pm

Learn them! They aren't really difficult, and they do save a heck of a lot of time.
Get a copy of Expresso
http://www.ultrapico.com/Expresso.htm
It's free, and it examines and generates Regular expressions.

ShobuGpta 27-Jun-14 0:02am

thanks it's helping a lot