static void EnumServices(string host, string username, string password)
{
    string ns = @"rootcimv2";
    string query = "select * from Win32_Service";

    ConnectionOptions options = new ConnectionOptions();
    if (!string.IsNullOrEmpty(username))
    {
        options.Username = username;
        options.Password = password;
    }

    ManagementScope scope =
        new ManagementScope(string.Format(@"\{0}{1}", host, ns), options);
    scope.Connect();

    ManagementObjectSearcher searcher =
        new ManagementObjectSearcher(scope, new ObjectQuery(query));
    ManagementObjectCollection retObjectCollection = searcher.Get();
    foreach (ManagementObject mo in searcher.Get())
    {
        Console.WriteLine(mo.GetText(TextFormat.Mof));
    }
}

namespace AtYourService
{
    using System;
    using System.ServiceProcess;

    class Program
    {
        static void Main(string[] args)
        {
            ServiceController[] services = ServiceController.GetServices();

            foreach (ServiceController service in services)
            {
                Console.WriteLine(
                    "The {0} service is currently {1}.",
                    service.DisplayName,
                    service.Status);
            }

            Console.Read();
        }
    }
}