How to check in C# if user account is active

Question

How can I check from C# if a local user account (namely the local Administrator account) is active?

What I actually want is a C# replacement for the "Account Active" = "Yes" (or "No") output from the "net user Administrator" command.

I'm afraid this question looks like a duplicate to this one, but I don't know what to pass in for the parameter for the root DirectoryEntry object. Tried different things like "ldap://" + Environment.MachineName, "ldap://127.0.0.1", "WinNT://" + Environment.MachineName, but none of them worked. I get an exception thrown by the searcher.FindAll() call in all three cases.

Answer 1

class Program
{
    static void Main(string[] args)
    {

        // Create the context for the principal object. 
        PrincipalContext ctx = new PrincipalContext(ContextType.Machine);

        UserPrincipal u = UserPrincipal.FindByIdentity(ctx, IdentityType.SamAccountName, "Administrator");
        Console.WriteLine(String.Format("Administrator is enable: {0}", u.Enabled));

    }
}

Answer 2

You can query WMI's Win32_UserAccount

This is boilerplate what MS's wmi code creator spits out as a reference;

using System;
using System.Management;
using System.Windows.Forms;

namespace WMISample
{
    public class MyWMIQuery
    {
        public static void Main()
        {
            try
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT Disabled FROM Win32_UserAccount WHERE name = 'alexk'");

                foreach (ManagementObject queryObj in searcher.Get())
                {
                    Console.WriteLine("-----------------------------------");
                    Console.WriteLine("Win32_UserAccount instance");
                    Console.WriteLine("-----------------------------------");
                    Console.WriteLine("Disabled: {0}", queryObj["Disabled"]);
                    Console.ReadKey();
                }
            }
            catch (ManagementException e)
            {
                MessageBox.Show("An error occurred while querying for WMI data: " + e.Message);
            }
        }
    }
}

(I'd link the tool but as usual the msdn links are dead)