Remove characters from string

Question

3.33/5 (3 votes)

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Hi All,

I have a string of numbers with some extra symbols like 123!2@2344#242%^. The symbols could be anywhere between the numbers. I should remove all those symbols.

I used

XML

char[] MyChar = {'-', '_', '(', ')', '{', '}', '[', ']', '<', '>', '@', '#', '$', '&', '*', '\'', ':', ';', ',' };
string strNumbers = Numbers.TrimEnd(MyChar);

but not working

Thanks in advance

Posted 18-Nov-14 0:07am

idhris2011

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2 solutions

Solution 2

"Not working" is not informative at all...

Test it:

C#

char[] MyChar = {'^', '%', '!', '-', '_', '(', ')', '{', '}', '[', ']', '<', '>', '@', '#', '$', '&', '*', '\'', ':', ';', ',' };
string strNumbers = @"123!2@2344#242%^";

string[] MyNumbers = strNumbers.Split(MyChar);
foreach(string num in MyNumbers)
{
    Console.WriteLine(num);
}

Result:

Posted 18-Nov-14 1:12am

Maciej Los

Comments

Sergey Alexandrovich Kryukov 18-Nov-14 9:58am

5ed. I would only add: one cannot remove anything from a string, which is a read-only object. A string function can only create a brand-new string.
—SA

Maciej Los 18-Nov-14 13:07pm

Thank you, Sergey ;)

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Manas Bhardwaj · Accepted Answer · 2014-11-18T00:13:00

Solution 1

What about this?

C#

string input = "123!2@2344#242%^.";
string result = new string(input.Where(c => char.IsDigit(c)).ToArray());

Posted 18-Nov-14 0:13am

Manas Bhardwaj

Comments

idhris2011 18-Nov-14 6:27am

Thanks Manas. That works

Manas Bhardwaj 18-Nov-14 6:29am

Glad it works. I would suggest that you accept this solution and vote appropriately, so that it can help other people as well.

Maciej Los 18-Nov-14 7:12am

5ed!
Linq rocks!

Manas Bhardwaj 18-Nov-14 7:18am

Thanks. Yes, it's very handy sometimes!

Takes sometime to get used to it though.

BillWoodruff 18-Nov-14 8:35am

+5

Manas Bhardwaj 18-Nov-14 8:49am

thx!

Sergey Alexandrovich Kryukov 18-Nov-14 9:58am

5ed. I would only add: one cannot remove anything from a string, which is a read-only object. A string function can only create a brand-new string.
—SA

Manas Bhardwaj 18-Nov-14 10:02am

Yes, thx SA!