private void btnGravarAlug_Click(object sender, EventArgs e)
        {
            CAMADAS.MODEL.Aluguel aluguel = new CAMADAS.MODEL.Aluguel();
            aluguel.id        = Convert.ToInt32(lblAlugID.Text);
            aluguel.clienteID = Convert.ToInt32(txtClienteID.Text);
            aluguel.data      = dptData.Value;

            CAMADAS.BLL.Aluguel bllAlug = new CAMADAS.BLL.Aluguel();
            if (lblAlugID.Text == "-1")
            {
                bllAlug.Insert(aluguel);
            }
            else
            {
                bllAlug.Update(aluguel);
            }


            dtgAluguel.DataSource = bllAlug.Select();

            habilitaControlesAluguel(false);
        }
        private void btnEditarAlug_Click(object sender, EventArgs e)
        {
            habilitaControlesAluguel(true);
            if (lblAlugID.Text != "" && lblAlugID.Text != "-1")
            {
                txtClienteID.Focus();
                CAMADAS.MODEL.Aluguel aluguel = new CAMADAS.MODEL.Aluguel();
                aluguel.id        = Convert.ToInt32(lblAlugID.Text);
                aluguel.clienteID = Convert.ToInt32(cmbCliente.SelectedIndex);
                aluguel.data      = Convert.ToDateTime(dptData.Value);

                CAMADAS.DAL.Aluguel dalAlug = new CAMADAS.DAL.Aluguel();
                dalAlug.Update(aluguel);

                dtgAluguel.DataSource = "";
                dtgAluguel.DataSource = dalAlug.Select();
            }
            else
            {
                MessageBox.Show("Não há dados para atualizar", "Atualizar", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }