private void LoadData()
{
customer1 = new Customer();
customer1.Id = 1;
customer1.Name = "John Smith";
customer2 = new Customer();
customer2.Id = 2;
customer2.Name = "Tom Jones";
currentCustomer = customer1;
}
private void nextButton_Click(object sender, EventArgs e)
{
currentCustomer = (currentCustomer.Id != 1) ? customer1 : customer2;
}