Active Directory - basics to pull up user info

Posted on 2007-11-20
Last Modified: 2008-02-01
Hello Experts,

I know a bit about programming, but I know basically nothing about active directory.  I've tried looking this up online, but haven't had any success.  Could someone post a snippet of code that would lets say display all users?

1 Comment

Accepted Solution

DavidTMoore earned 500 total points
ID: 20322886
This might not be exactly what you are looking for, but these are the methods I use to interact with active directory, take a look and maybe they can give you a better understanding of how some of this works.
public static DirectoryEntry GetDirectoryEntry()


        DirectoryEntry de = new DirectoryEntry("LDAP://19dc01", "USERNAME", "PASSWORD");

        return de;


    public bool UserExists(string username)


        DirectoryEntry de = GetDirectoryEntry();

        DirectorySearcher deSearch = new DirectorySearcher();

        deSearch.SearchRoot = de;

        deSearch.Filter = "(&(objectClass=user) (cn=" + username + "))";

        SearchResultCollection results = deSearch.FindAll();

        return results.Count > 0;


    public String GetProperty(String userAccount, String propertyName)


        DirectoryEntry entry = GetDirectoryEntry();

        String account = userAccount.Replace(@"DOMAIN\", "");



            DirectorySearcher search = new DirectorySearcher(entry);

            search.Filter = "(SAMAccountName=" + account + ")";


            SearchResult result = search.FindOne();

            if (result != null)


                return result.Properties[propertyName][0].ToString();




                return "Unknown User";



        catch (Exception ex)


            string debug = ex.Message;

            return "";



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