How do I find out which computer is the domain controller in Windows programmatically

Question

I am looking for a way to determine what the Name IP Address of the domain controller is for a given domain that a client computer is connected to   At our company we have a lot of small little networks that we use for testing and most of them have their own little domains   As an example  one of the domains is named  TESTLAB    I have an Windows XP workstation that is a member of the TESTLAB domain and I am trying to figure out the name of the domain controller so that I can go and look to see what users have been defined for the domain   In our lab there is a mix of Windows Server 2000 and Windows Server 2003  and in reality probably a couple of NT 4 Servers  so it would be nice to find a solution that would work for both   Looking on the Internet  it looks like there are various utilities  such as Windows Power Shell or nltest  but these all require that you download and install other utilities   I was hoping to find a way to find the domain controller without having to install anything additional   EDIT If I wanted to write a program to find the domain controller or the users in the current domain  how would I go about doing that

User · Answer

Run gpresult at a Windows command prompt  You ll get an abundance of information about the current domain  current user  user  amp  computer security groups  group policy names  Active Directory Distinguished Name  and so on

User · Answer

In C   NET 3 5 you could write a little program to do   using  PrincipalContext context   new PrincipalContext ContextType Domain         string controller   context ConnectedServer      Console WriteLine   Domain Controller     controller         This will list all the users in the current domain   using  PrincipalContext context   new PrincipalContext ContextType Domain         using  UserPrincipal searchPrincipal   new UserPrincipal context                using  PrincipalSearcher searcher   new PrincipalSearcher searchPrincipal                       foreach  UserPrincipal principal in searcher FindAll                                Console WriteLine  principal SamAccountName

User · Answer

With the most simple programming language  DOS batch  echo  LOGONSERVER

User · Answer

To retrieve the information when the DomainController exists in a Domain in which your machine doesn t belong  you need something more     DirectoryContext domainContext    new DirectoryContext DirectoryContextType Domain   targetDomainName    validUserInDomain    validUserPassword       var domain   System DirectoryServices ActiveDirectory Domain GetDomain domainContext     var controller   domain FindDomainController

User · Answer

Run gpresult at a Windows command prompt  You ll get an abundance of information about the current domain  current user  user  amp  computer security groups  group policy names  Active Directory Distinguished Name  and so on

User · Answer

With the most simple programming language  DOS batch  echo  LOGONSERVER

User · Answer

In cmd on Windows  type the following commande   nltest  dclist  domainname    It lists all domain controllers in particular domain

User · Answer

In cmd on Windows  type the following commande   nltest  dclist  domainname    It lists all domain controllers in particular domain

User · Answer

From command line query the logonserver env variable    C   SET L  LOGONSERVER     DCNAME

User · Answer

In C   NET 3 5 you could write a little program to do   using  PrincipalContext context   new PrincipalContext ContextType Domain         string controller   context ConnectedServer      Console WriteLine   Domain Controller     controller         This will list all the users in the current domain   using  PrincipalContext context   new PrincipalContext ContextType Domain         using  UserPrincipal searchPrincipal   new UserPrincipal context                using  PrincipalSearcher searcher   new PrincipalSearcher searchPrincipal                       foreach  UserPrincipal principal in searcher FindAll                                Console WriteLine  principal SamAccountName

User · Answer

With the most simple programming language  DOS batch  echo  LOGONSERVER

User · Answer

From command line query the logonserver env variable    C   SET L  LOGONSERVER     DCNAME

User · Answer

With the most simple programming language  DOS batch  echo  LOGONSERVER

User · Answer

in Powershell   env logonserver

User · Answer

in Powershell   env logonserver

User · Answer

In C   NET 3 5 you could write a little program to do   using  PrincipalContext context   new PrincipalContext ContextType Domain         string controller   context ConnectedServer      Console WriteLine   Domain Controller     controller         This will list all the users in the current domain   using  PrincipalContext context   new PrincipalContext ContextType Domain         using  UserPrincipal searchPrincipal   new UserPrincipal context                using  PrincipalSearcher searcher   new PrincipalSearcher searchPrincipal                       foreach  UserPrincipal principal in searcher FindAll                                Console WriteLine  principal SamAccountName

User · Answer

To retrieve the information when the DomainController exists in a Domain in which your machine doesn t belong  you need something more     DirectoryContext domainContext    new DirectoryContext DirectoryContextType Domain   targetDomainName    validUserInDomain    validUserPassword       var domain   System DirectoryServices ActiveDirectory Domain GetDomain domainContext     var controller   domain FindDomainController

User · Answer

In C   NET 3 5 you could write a little program to do   using  PrincipalContext context   new PrincipalContext ContextType Domain         string controller   context ConnectedServer      Console WriteLine   Domain Controller     controller         This will list all the users in the current domain   using  PrincipalContext context   new PrincipalContext ContextType Domain         using  UserPrincipal searchPrincipal   new UserPrincipal context                using  PrincipalSearcher searcher   new PrincipalSearcher searchPrincipal                       foreach  UserPrincipal principal in searcher FindAll                                Console WriteLine  principal SamAccountName

[windows] How do I find out which computer is the domain controller in Windows programmatically?

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