private void ReadUsers(string machine, Dictionary<string, IdentitySourceItem> userList) { try { using (DirectoryEntry root = new DirectoryEntry("WinNT://" + machine)) { root.Children.SchemaFilter.Add("User"); foreach (DirectoryEntry d in root.Children) { var login = machine + "\\" + d.Name; userList[login] = new IdentitySourceItem() { UserName = login, DisplayName = (d.Properties["FullName"].Value ?? login).ToString() }; } } } catch (Exception ex) { Log.Error("Error reading users from " + machine, ex); } }