private void btDevolve_Click(object sender, EventArgs e)
        {
            if (dataGridView1.CurrentRow.Index != -1)
            {
                alugarVeiculo form = new alugarVeiculo(Convert.ToInt32(dataGridView1.CurrentRow.Cells["ID"].Value, new CultureInfo("pt-BR")), "devolve");


                try
                {
                    if (form.ShowDialog() == DialogResult.OK)
                    {
                        PopularGrid();
                        form.Dispose();
                    }
                    else
                    {
                        PopularGrid();
                        form.Dispose();
                    }
                }
                catch (ObjectDisposedException ex)
                {
                    form.Dispose();
                }
            }
            else
            {
                MessageBox.Show("Selecione um veiculo com status em uso antes de devolver");
            }
        }
        private void btAluga_Click(object sender, EventArgs e)
        {
            alugarVeiculo form = new alugarVeiculo();

            if (form.ShowDialog() == DialogResult.OK)
            {
                PopularGrid();
                form.Dispose();
            }
            else
            {
                PopularGrid();
                form.Dispose();
            }
        }