Visual Studio (Question)

            SqlConnection connexion = new SqlConnection(@"Data Source=PC-DE-KEV\SQLEXPRESS;Initial Catalog=ProjetIndus;Integrated Security=True;Pooling=False");
            SqlCommand command = connexion.CreateCommand();
            string requete = "SELECT LOGIN_AD, PASSWORD_AD FROM ADMINISTRATEUR ORDER BY ID_ADMIN";
            command.CommandText = requete;
            connexion.Open();
            SqlDataReader lire = command.ExecuteReader();
            
            // Lit les informations de la base de données
            Console.WriteLine("Lecture du DataReader \n\n");

            if (monLogin != "" & monPass != "")
            {

                while (lire.Read())
                {
                    if (monLogin == (string)lire["LOGIN_AD"] & monPass == (string)lire["PASSWORD_AD"])
                    {
                        test.Text = "Bien connecté";
                    }
                    else
                    {
                        test.Text = "Mauvaise connexion";
                    }

                }

            }
            else
            {
                test.Text = "Champs vides";
            }

            // Permet d'afficher
            connexion.Close();
            connexion.Dispose();