public List<Vendas> PesquisarBL()
{
/*criar as regras de negocio*/
VendasDA vendasDA = new VendasDA();
return vendasDA.PesquisarDA();
}
public List<Vendas> PesquisarBL(int ven)
{
VendasDA vendasDA = new VendasDA();
return vendasDA.PesquisarDA(ven);
}