获取 Active Directory 组的成员并检查它们是启用还是禁用

问题描述

What is the fastest way to get a list of all members/users in a given AD group and determine whether or not a user is enabled (or disabled)?

We are potentially talking about 20K users, so I would like to avoid hitting the AD for each individual user.

If you're on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement (S.DS.AM) namespace. Read all about it here:

• Managing Directory Security Principals in the .NET Framework 3.5
• MSDN docs on System.DirectoryServices.AccountManagement

Basically, you can define a domain context and easily find users and/or groups in AD:

// set up domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain);

// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "YourGroupNameHere");

// if found....
if (group != null)
{
   // iterate over members
   foreach (Principal p in group.GetMembers())
   {
      Console.WriteLine("{0}: {1}", p.StructuralObjectClass, p.DisplayName);

      // do whatever you need to do to those members
      UserPrincipal theUser = p as UserPrincipal;

      if(theUser != null)
      {
          if(theUser.IsAccountLockedOut()) 
          {
               ...
          }
          else
          {
               ...
          }
      }
   }
}

The new S.DS.AM makes it really easy to play around with users and groups in AD!