private void CboCustomer_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            string cboValue = "";

            if (CboCustomer.SelectedIndex > 0)
            {
                cboValue = ((ComboBoxItem)CboCustomer.SelectedItem).Content.ToString();
            }

            if (cboValue.Equals("Yes")) // || if (CboCustomer.SelectedItem.ToString().Equals("Yes"))
            {
                boolIsCustomer = true;
                User     addCustomer = null;
                Customer newCustomer = null;

                //MessageBoxResult result = MessageBox.Show("Updating database to customer status.",
                //    "Customer Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Exclamation);
                //if (result == MessageBoxResult.Yes)
                //{
                if (currentUser.IsCustomer == true)
                {
                    try
                    {
                        newCustomer = UsersDB.ReadCustomerById(currentUser.UserID);
                        //Customer custTestID = UsersDB.ReadCustomerById(currentUser.UserID);
                        //MessageBox.Show(newCustomer.ToString());
                        if (currentUser.UserID == newCustomer.UserId)//custTestID.UserID)
                        {
                            return;
                        }
                        //else
                        //{
                        //    addCustomer = new User(currentUser.UserID, currentUser.Username,
                        //    currentUser.Password, currentUser.IsAdmin, currentUser.UserCreatedDate, boolIsCustomer);
                        //    UsersDB.UpdateCurrentUser(addCustomer);

                        //    newCustomer = new Customer(currentUser.UserID, currentUser.Username, TextboxLastName.Text,
                        //                            TextboxAddress.Text, TextboxCity.Text, null,
                        //                            TextboxZip.Text, TextEmailAddress.Text);
                        //    UsersDB.CreateCustomer(newCustomer);
                        //}
                    }
                    catch (Exception ex) { MessageBox.Show(ex.Message.ToString()); }
                }
                else
                {
                    try
                    {   //UPDATE User so 'IsCustomer' property is set to True.
                        addCustomer = new User(currentUser.UserID, currentUser.Username, currentUser.Password,
                                               currentUser.IsAdmin, currentUser.UserCreatedDate, boolIsCustomer);
                        UsersDB.UpdateCurrentUser(addCustomer);
                        //CREATE Customer from current User linking together by 'UserId'
                        newCustomer = new Customer(currentUser.UserID, currentUser.Username, TextboxLastName.Text,
                                                   TextboxAddress.Text, TextboxCity.Text, null, TextboxZip.Text,
                                                   TextEmailAddress.Text);
                        UsersDB.CreateCustomer(newCustomer);
                    }
                    catch (Exception ex) { MessageBox.Show(ex.Message.ToString()); }
                }
            }
        }