Access or Decompile xAxaptaUserManager for advanced Active Directory functionality

Hi Pros,

I tried to read LDAP fields from Active Directory without using .NET Assemblys. The only class which implements similar functionality is AxaptaUserManager which inherits from xAxaptaUserManager.

The AxaptaUserManager has methods to read the cn , email, sid and the domain from ActiveDirectory but has no parameter to access other LDAP fields. So if it is possible to read these fields it can´t be a big difference reading other ldap fields. There must be an Ldap query somewhere deep inside this class but I cant see the Code from xAxaptaUserManager to build something like that. How can I get a look inside? Is it x++ or C++ inside system or kernal classes?

Is there an regular way to solve this without .NET or should i just use the DirectoryServices.dll .NET DLL?

Thanks in advance for your opinion!