private void button2_Click(object sender, EventArgs e)
        {
            String name, lastName;

            try
            {
                name = customerName.Text;
                lastName = customerLastName.Text;

                Customer customer = new Customer();
                customer.setName(name);
                customer.setLastName(lastName);

                cMode.insercik(customer, 3);
                MessageBox.Show("Inserted", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }

            catch
            {
                MessageBox.Show("Something went wrong!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }