private void UpdateBtn_Click(object sender, EventArgs e) { Customer customer = new Customer(); getDate(customer); if (UpdateBtn.Text == "Add Customer") { bool flag = controller.Insert(customer); if (flag) { flag2 = flag; MessageBox.Show(null, "Customer inserted successfully", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show(null, "Please check your input", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { customer.ID = id; bool flag = controller.Update(customer); if (flag) { flag2 = flag; MessageBox.Show(null, "Customer updated successfully", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show(null, "Please check your input", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }