private void frmAluguel_Load(object sender, EventArgs e)
        {
            //Parte de Alugueis
            CAMADAS.BLL.Clientes bllCli = new CAMADAS.BLL.Clientes();
            cmbCliente.DisplayMember = "nome";
            cmbCliente.ValueMember   = "id";
            cmbCliente.DataSource    = bllCli.Select();

            CAMADAS.BLL.Aluguel bllAlug = new CAMADAS.BLL.Aluguel();
            dtgAluguel.DataSource = "";
            dtgAluguel.DataSource = bllAlug.Select();
            this.dtgAluguel.DefaultCellStyle.Font = new Font("Arial", 12);

            habilitaControlesAluguel(false);
            limpaCamposAlug();

            //Parte de Itens
            CAMADAS.BLL.Avioes       bllAviao        = new CAMADAS.BLL.Avioes();
            CAMADAS.BLL.ItensAluguel bllItensAluguel = new CAMADAS.BLL.ItensAluguel();
            cmbAviao.DisplayMember = "modelo";
            cmbAviao.ValueMember   = "id";
            cmbAviao.DataSource    = bllAviao.Select();

            limpaCamposItens();
            habilitaControlesItens(false);

            dtgItem.DataSource = bllItensAluguel.Select();
            this.dtgItem.DefaultCellStyle.Font = new Font("Arial", 12);
        }
        private void btnDevolverItem_Click(object sender, EventArgs e)
        {
            CAMADAS.BLL.Aluguel bllAluguel = new CAMADAS.BLL.Aluguel();
            string msg    = "Não há aluguel para devolver";
            string modBox = "Devolver";

            if (lblItemID.Text != "" && lblItemID.Text != "-1")
            {
                msg = "Deseja Devolver o Aviao: " + cmbAviao.Text + " ?";
                DialogResult resposta = MessageBox.Show(msg, modBox, MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
                if (resposta == DialogResult.Yes)
                {
                    int id = Convert.ToInt32(lblItemID.Text);
                    bllAluguel.Delete(id);
                }
            }
            else
            {
                MessageBox.Show(msg, modBox, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }

            limpaCamposAlug();
            dtgAluguel.DataSource = "";
            dtgAluguel.DataSource = bllAluguel.Select();
        }
        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);
        }