Remove domain information from login id in C#

c# string indexof
Dan picture Dan · Oct 9, 2008 · Viewed 22.3k times · Source

I would like to remove the domain/computer information from a login id in C#. So, I would like to make either "Domain\me" or "Domain\me" just "me". I could always check for the existence of either, and use that as the index to start the substring...but I am looking for something more elegant and compact.

Worse case scenario:

int startIndex = 0;
int indexOfSlashesSingle = ResourceLoginName.IndexOf("\");
int indexOfSlashesDouble = ResourceLoginName.IndexOf("\\");
if (indexOfSlashesSingle != -1)
    startIndex = indexOfSlashesSingle;
else
    startIndex = indexOfSlashesDouble;
string shortName = ResourceLoginName.Substring(startIndex, ResourceLoginName.Length-1);

Answer

user26350 picture user26350 · Oct 9, 2008

when all you have is a hammer, everything looks like a nail.....

use a razor blade ----

using System;
using System.Text.RegularExpressions;
public class MyClass
{
    public static void Main()
    {
        string domainUser = Regex.Replace("domain\\user",".*\\\\(.*)", "$1",RegexOptions.None);
        Console.WriteLine(domainUser);  

    }

}

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