/// <summary>
/// Event handler for adding a new customer to the database. Performs validation
/// to check required fields are not blank.
/// </summary>
private void btnAdd_Click(object sender, RoutedEventArgs e)
{
try
{
// Only increment Customer ID if
// - a customer exists
// - the current ID matches the previous ID
// - the current customer ID is less than 50000
if (customerCount > 0 && prevCustomerID == customerID && customerID < 50000)
{
customerID++;
}
Customer customer = new Customer
{
ID = customerID,
FirstName = txtFirstName.Text,
LastName = txtSurname.Text,
EmailAddress = txtEmailAddress.Text,
SkypeID = txtSkypeID.Text,
TelephoneNo = txtTelephone.Text,
PreferredContact = SetContactType()
};
// Check perform validation on required fields
if (customer.Validate() == false)
{
throw new Exception(customer.validationErrors.ToString());
}
store.Add(customer);
// Set the previous customer ID to the one that has been added to store
prevCustomerID = customerID;
// Add the customer's ID and name to the ListBox
listCustomerNames.Items.Add(customer.ID + " " + customer.FirstName + " " + customer.LastName);
ClearAllFields();
customerCount++;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
