/// <summary>
/// Event handler for the click event of the Add menuítem of the Customer menu.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void mnuCustomerAdd_Click(object sender, EventArgs e)
{
// create and show the new instance of the CustomerForm
CustomerForm frmCustomer = new CustomerForm("Add New Customer");
//if the user clicks OK on the customerform then call the UpdateCusomerList()
//to update the listbox
if (frmCustomer.ShowDialog() == DialogResult.OK)
{
customerMngr.AddCustomer(frmCustomer.CustomerData);
UpdateCustomerList();
}
}
/// <summary>
/// Event handler for teh click event of Change menuitme of the Customer Menu.
/// If list box is not empty then allow the user to change details of the customer
/// at the selected index, else call showError() method
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void mnuCustomerChange_Click(object sender, EventArgs e)
{
//perform the update if the list box is not empty
if (lstCustomerDetails.Items.Count != 0)
{
CustomerForm frmCustomer = new CustomerForm("Change Customer Details");
int index = lstCustomerDetails.SelectedIndex;
//if index is not selected then show error, otherwise continue
if (index != -1)
{
frmCustomer.CustomerData = new Customer(customerMngr.GetCustomer(index).ContactData);
}
else
{
MessageBox.Show("Please select an index", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//if the user clicks on the Ok button of the customerForm then continue with the updation
if (frmCustomer.ShowDialog() == DialogResult.OK)
{
customerMngr.ChangeCustomer(frmCustomer.CustomerData.ContactData, lstCustomerDetails.SelectedIndex);
UpdateCustomerList();
}
}
else
{
//if list box is empty, show error
ShowError();
return;
}
}
