CODEWITHSUNDEEP
c#active-directory
Ian G
Ian G

Reputation: 30224

How do I find a user's Active Directory display name in a C# web application?

I'm writing a web application which uses windows authentication and I can happily get the user's login name using something like:

 string login = User.Identity.Name.ToString();

But I don't need their login name I want their DisplayName. I've been banging my head for a couple hours now...

Can I access my organisation's AD via a web application?

Upvotes: 23

Views: 44512

Answers (5)

Ben
Ben

Reputation:

How about this:

private static string GetFullName()
    {
        try
        {
            DirectoryEntry de = new DirectoryEntry("WinNT://" + Environment.UserDomainName + "/" + Environment.UserName);
            return de.Properties["displayName"].Value.ToString();
        }
        catch { return null; }
    }

Upvotes: 30

user2239589
user2239589

Reputation: 51

Use this:

string displayName = UserPrincipal.Current.DisplayName;

Upvotes: 5

Ian G
Ian G

Reputation: 30224

In case anyone cares I managed to crack this one:

      /// This is some imaginary code to show you how to use it

      Session["USER"] = User.Identity.Name.ToString();
      Session["LOGIN"] = RemoveDomainPrefix(User.Identity.Name.ToString()); // not a real function :D
      string ldappath = "LDAP://your_ldap_path";
      // "LDAP://CN=<group name>, CN =<Users>, DC=<domain component>, DC=<domain component>,..."


      Session["cn"] = GetAttribute(ldappath, (string)Session["LOGIN"], "cn");
      Session["displayName"] = GetAttribute(ldappath, (string)Session["LOGIN"], "displayName");
      Session["mail"] = GetAttribute(ldappath, (string)Session["LOGIN"], "mail");
      Session["givenName"] = GetAttribute(ldappath, (string)Session["LOGIN"], "givenName");
      Session["sn"] = GetAttribute(ldappath, (string)Session["LOGIN"], "sn");


/// working code

public static string GetAttribute(string ldappath, string sAMAccountName, string attribute)
    {
        string OUT = string.Empty;

        try
        {
            DirectoryEntry de = new DirectoryEntry(ldappath);
            DirectorySearcher ds = new DirectorySearcher(de);
            ds.Filter = "(&(objectClass=user)(objectCategory=person)(sAMAccountName=" + sAMAccountName + "))";

            SearchResultCollection results = ds.FindAll();

            foreach (SearchResult result in results)
            {
                OUT =  GetProperty(result, attribute);
            }
        }
        catch (Exception t)
        {
            // System.Diagnostics.Debug.WriteLine(t.Message);
        }

        return (OUT != null) ? OUT : string.Empty;
    }

public static string GetProperty(SearchResult searchResult, string PropertyName)
    {
        if (searchResult.Properties.Contains(PropertyName))
        {
            return searchResult.Properties[PropertyName][0].ToString();
        }
        else
        {
            return string.Empty;
        }
    }

Upvotes: 4

GalacticCowboy
GalacticCowboy

Reputation: 11769

There is a CodePlex project for Linq to AD, if you're interested.

It's also covered in the book LINQ Unleashed for C# by Paul Kimmel - he uses the above project as his starting point.

not affiliated with either source - I just read the book recently

Upvotes: 2

Panos
Panos

Reputation: 19152

See related question: Active Directory: Retrieve User information

See also: Howto: (Almost) Everything In Active Directory via C# and more specifically section "Enumerate an object's properties".

If you have a path to connect to a group in a domain, the following snippet may be helpful:

GetUserProperty("<myaccount>", "DisplayName");

public static string GetUserProperty(string accountName, string propertyName)
{
    DirectoryEntry entry = new DirectoryEntry();
    // "LDAP://CN=<group name>, CN =<Users>, DC=<domain component>, DC=<domain component>,..."
    entry.Path = "LDAP://...";
    entry.AuthenticationType = AuthenticationTypes.Secure;

    DirectorySearcher search = new DirectorySearcher(entry);
    search.Filter = "(SAMAccountName=" + accountName + ")";
    search.PropertiesToLoad.Add(propertyName);

    SearchResultCollection results = search.FindAll();
    if (results != null && results.Count > 0)
    {
        return results[0].Properties[propertyName][0].ToString();
    }
    else
    {
            return "Unknown User";
    }
}

Upvotes: 8

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