How to get Active Directory Attributes not represented by the UserPrincipal class

Question

What I mean is that right now I am using System.DirectoryServices.AccountManagement and if I use UserPrincipal class I only see the Name, Middle Name, etc

so in my c

Answer 1

up.Mobile would be perfect, but unfortunately, there's no such method in the UserPrincipal class, so you have to switch to DirectoryEntry by calling .GetUnderlyingObject().

static void GetUserMobile(PrincipalContext ctx, string userGuid)
{
    try
    {
        UserPrincipal up = UserPrincipal.FindByIdentity(ctx, IdentityType.Guid, userGuid);
        DirectoryEntry up_de = (DirectoryEntry)up.GetUnderlyingObject();
        DirectorySearcher deSearch = new DirectorySearcher(up_de);
        deSearch.PropertiesToLoad.Add("mobile");
        SearchResultCollection results = deSearch.FindAll();
        if (results != null && results.Count > 0)
        {
            ResultPropertyCollection rpc = results[0].Properties;
            foreach (string rp in rpc.PropertyNames)
            {
                if (rp == "mobile")
                    Console.WriteLine(rpc["mobile"][0].ToString());
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
    }
}