Extract username from DOMAIN\Username c#

Question

I have implemented an application that authenticates users against active directory using LDAP. Since users are being authenticated from different domains, they log in by DOMAIN\UserName. After being logged in, I capture the username by using User.Identity.GetUserName() however this, of course, returns DOMAIN\UserName. What I need to do here now is to extract the UserName from the string returned. Any help will be appreciated.

possible duplicate of [How to get username without domain](http://stackoverflow.com/questions/330320/how-to-get-username-without-domain) — petelids, Aug 28 '14 at 20:57
yes it is a duplicate.... Just realized that after posting the question. maybe I wasnt searching for the right thing. :-) — Wairimu Murigi, Aug 28 '14 at 21:11

score 7 · Accepted Answer · answered Aug 28 '14 at 21:02

7

What about User.Identity.GetUserName().Split('\\')[1] ?

answered Aug 28 '14 at 21:02

Mathias Müller

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score 3 · Answer 2 · answered Aug 28 '14 at 20:54

3

I think you're looking for Substring

string FullName =  User.Identity.GetUserName();
string UserName = FullName.Substring(FullName.IndexOf("\\"));

(You might have to throw a + 1 right after FullName.IndexOf("\\"))

answered Aug 28 '14 at 20:54

MikeH

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score 0 · Answer 3 · answered Sep 22 '21 at 03:32

public string RemoveDomain(string username)
{
    if (String.IsNullOrWhiteSpace(username))
        return username;

    return username.Split('\\').Last();
}

This will handle null and username without domain name as well.

Usage:

var username = RemoveDomain("Domain1\\Username");
username = RemoveDomain("Username");
username = RemoveDomain(null);

Extract username from DOMAIN\Username c#

3 Answers3