using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Management;

namespace capaDatos
{
public  class conexion
 {




    public ManagementScope ConectarWMI(string strBibliotecaWMI,bool blnHasDomain,
        bool blnIsRemote, string strServer, string strUsername,
        string strPassword, string strAuthority= null)

    {
        ManagementScope scope = new ManagementScope();
        try
        {
            ConnectionOptions opciones = new ConnectionOptions();
            opciones.EnablePrivileges = true;
            opciones.Impersonation = ImpersonationLevel.Impersonate;
            if (blnHasDomain == true)
            {
                opciones.Authority = string.Format(@"ntlmdomain:{0}", strAuthority);

            }

            if (blnIsRemote)
            {
                opciones.Username = strUsername;
                opciones.Password = strPassword;
            }


            scope.Path.Path = string.Format(@"\{0}root{1}", strServer, strBibliotecaWMI);

            Console.WriteLine(scope.Path.Path);
            scope.Options = opciones;
            scope.Connect();
            if (scope.IsConnected) { Console.WriteLine("Conexion exitosa"); }
            else { Console.WriteLine("Fallo de conexion"); }
        }
        catch(ManagementException me) { Console.WriteLine("ManagementException" + " ---> " + me.Message); }
        catch (Exception ex ) { Console.WriteLine("Exception" + " : " +       ex.Message); }
        return scope;
       }

      }
     }

--------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using capaDatos;
using System.Management;

namespace capaNegocio
{
public class AccesoWMI
 {
    public void Pruebas()
    {
        WMI c = new WMI();

 c.ToGet_Win32_NetworkAdapter();

  }
    public void pruebasRemotas()
    {
        conexion cone = new conexion();

        cone.ConectarWMI("cimv2", false, true, "JohnnyDroop", "Dogy", "pandora864", null);
    }
 }

-------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using capaNegocio;

   namespace dgtsi_pruebas
  {
   class Program
   {
      static void Main(string[] args)
      {
        AccesoWMI w = new AccesoWMI();
        //w.Pruebas();

        w.pruebasRemotas();
        Console.ReadLine();

    }
}
}