C# regular expressions

Question

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Hi,

I need to filter everything before the backslash. For example domain\username, domain and the backslash must be filtered and removed.

I tried this but it aint working.

var x = IPGlobalProperties.GetIPGlobalProperties().DomainName.ToUpper();
string s = Regex.Replace(x, @"^\s*(.*?)\s*$", "");

Thanks in advance!

Posted 10-Apr-11 22:42pm

Member 7762422

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5 solutions

Solution 1

MIDL

Find a character is present in string or not
            string abc = "anvas the real napster /";
            char[] SpecialChars = "*-_= /".ToCharArray();
            int indexOf = abc.IndexOfAny(SpecialChars);
            if (indexOf != -1)
            {
                //there should a special char in the string
                // if u want to find out the character
                          string charval = abc[indexOf].ToString();
            }
            else
            {
                //string is fine
            }

Posted 10-Apr-11 22:51pm

anvas kuttan

Solution 2

Hi,
Try this,

C#

char[] separator = new char[] { '\\' };
            string[] new_x= x.Split(separator,3);

It will split ur String ( i.e x)into 3 parts i.e new_x[0],new_x[1],new_x[2].
check which string of array contains ur answer and just use it.

I think in ur case new_x[1] will hold ur username.

Or
refer this link
[^]

Posted 10-Apr-11 22:56pm

Pratik Bhesaniya

Updated 10-Apr-11 23:00pm

v2

Comments

Member 7762422 11-Apr-11 5:01am

I've got this now:

string abc = "Domain\\Username THE NAPSTER";

char[] separator = new char[] { '\\' };
string[] new_abc = abc.Split(separator, 3);

But it aint filtering everything before backslash so domain must be removed

Pratik Bhesaniya 11-Apr-11 5:08am

new_abc[1] holding ur output ===>> Username THE NAPSTER
and i think this is what u want or try below,
Response.Write(new_abc[0] + "" + new_abc[1]);
check what it should gives you as output .

Solution 4

If you want to remove all characters from beginning of the line upto the first "/" in front of the part you want to keep (and including "/") this is your regex:

Regex.Replace(x, @"^.*\/(.*$)","$1");

Posted 10-Apr-11 23:15pm

Michel [mjbohn]

Updated 10-Apr-11 23:19pm

v3

Solution 5

C#

string s = System.IO.Path.GetDirectoryName(x);

Posted 11-Apr-11 22:46pm

Toli Cuturicu

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Ashishmau · Accepted Answer · 2011-04-10T23:14:00

Solution 3

u can do like this also

C#

string s = "domain\\username";
       string a = s.Substring(s.IndexOf("\\")+1);

Hope it helps

Posted 10-Apr-11 23:14pm

Ashishmau

Comments

Member 7762422 11-Apr-11 5:20am

Thanks all, Ashishmau your solution worked in my situation thanks allot