Get a List of Active Local Users

by adam 7. September 2010 23:08

The code below will return all users on the machine that are not marked as disabled. Be sure to add a reference to System.DirectoryServices.

using System;
using System.Collections.Generic;
using System.DirectoryServices;

//...

private const int UF_ACCOUNTDISABLE = 0x0002;
 
private List<DirectoryEntry> GetActiveMachineUsers()
{
    List<DirectoryEntry> returnValue = new List<DirectoryEntry>();
 
    DirectoryEntry localMachine = new DirectoryEntry("WinNT://" + Environment.MachineName);
 
    foreach (DirectoryEntry user in localMachine.Children)
    {
        if (user.SchemaClassName == "User")
        {
            if (((int)user.Properties["UserFlags"].Value & UF_ACCOUNTDISABLE) != UF_ACCOUNTDISABLE)
            {
                returnValue.Add(user);
            }
        }
    }
 
    return returnValue;
}