public bool Cadastra(Veiculo c)
        {
            if (!string.IsNullOrEmpty(c.Placa))
            {
                if (c.Placa.Length > 6)
                {
                    if (!string.IsNullOrEmpty(c.Modelo))
                    {
                        if (!string.IsNullOrEmpty(c.Km))
                        {
                            if (!string.IsNullOrEmpty(c.ProxTroca))
                            {
                                if (!string.IsNullOrEmpty(c.TrocaPadrao))
                                {
                                    CadVeiculosDAO DAO    = new CadVeiculosDAO();
                                    DataTable      Result = new DataTable();

                                    Result = DAO.Cadastra(c, Autenticacao.GetCodUsuario());
                                    if (Result != null)
                                    {
                                        if (Result.Rows.Count > 0)
                                        {
                                            if (Result.Rows[0].ItemArray[0].ToString().Equals("1"))
                                            {
                                                return(true);
                                            }
                                            else
                                            {
                                                return(false);
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }


            return(false);
        }
        public Veiculo BuscaAnt(Veiculo c)
        {
            CadVeiculosDAO DAO    = new CadVeiculosDAO();
            DataTable      Result = new DataTable();

            Result = DAO.BuscaAnt(c);

            if (Result != null)
            {
                if (Result.Rows.Count > 0)
                {
                    if (!Result.Rows[0].ItemArray[0].ToString().Equals("-1"))
                    {
                        c = DataToUsuario(Result, c);
                        return(c);
                    }
                    else
                    {
                        return(null);
                    }
                }
                else
                {
                    c.Id   = null;
                    Result = DAO.BuscaAnt(c);
                    if (Result != null)
                    {
                        if (Result.Rows.Count > 0)
                        {
                            if (!Result.Rows[0].ItemArray[0].ToString().Equals("-1"))
                            {
                                c = DataToUsuario(Result, c);
                                return(c);
                            }
                        }
                    }
                }
            }
            return(null);
        }
        public bool Apaga(string placa)
        {
            CadVeiculosDAO DAO = new CadVeiculosDAO();

            if (!string.IsNullOrEmpty(placa))
            {
                DataTable Result = new DataTable();

                Result = DAO.Apaga(placa, Autenticacao.GetCodUsuario());
                if (Result != null)
                {
                    if (Result.Rows.Count > 0)
                    {
                        if (Result.Rows[0].ItemArray[0].ToString().Equals("1"))
                        {
                            return(true);
                        }
                    }
                }
            }
            return(false);
        }