public void ModifierVariete(Models.Variete V)
 {
     conx.Query(@"update Variete set nomVariete=@2,numCulture=@3
                 where num=@1 ");
     conx.cmd.Parameters.AddWithValue("@2", V._nomVariete);
     conx.cmd.Parameters.AddWithValue("@3", V._culture._numCulture);
     conx.cmd.Parameters.AddWithValue("@1", V._num);
     conx.ExecuteNonQuery();
 }
        /* ajout*/
        public void AjouterVariete(Models.Variete V)
        {
            conx.Query("insert into Variete values (@1,@2,@3,@4,@5)");
            conx.cmd.Parameters.AddWithValue("@1", V._num);
            conx.cmd.Parameters.AddWithValue("@2", V._nomVariete);
            conx.cmd.Parameters.AddWithValue("@3", V._culture._numCulture);

            conx.ExecuteNonQuery();
        }
 public void SupprimerVariete(Models.Variete V)
 {
     conx.Query(@"delete from culture where  num=@1 ");
     conx.cmd.Parameters.AddWithValue("@1", V._num);
     conx.ExecuteNonQuery();
 }