private void AddGuest_Click(object sender, RoutedEventArgs e)
{
if (!NullCheckUtility.IsNotNull(party))
{
MessageBox.Show("Please enter total number of guests and costs per person, and click create a list");
}
else
{
var firstname = ChristianNameTextbox.Text;
var lastname = surnameTextbox.Text;
if (!string.IsNullOrEmpty(firstname) && !string.IsNullOrEmpty(lastname))
{
string message;
var guestWasAddedToList = party.AddToGuestList(firstname, lastname, out message);
if (!guestWasAddedToList)
{
MessageBox.Show(message);
AddGuest.IsEnabled = false;
}
else
{
var guestlist = party.GetGuestList();
guestListListBox.Items.Clear();
foreach (var guest in guestlist)
{
guestListListBox.Items.Add(guest);
}
totalCostToDisplayAsLabel.Content = party.CostPerCapita * party.NumberOfGuests();
totalNumberOfGuestsToDisplayAsLabel.Content = party.NumberOfGuests();
changeButton.IsEnabled = true;
deleteButton.IsEnabled = true;
}
}
else
{
MessageBox.Show("Please enter a first and last name");
}
}
}