private async void addSavings_Click(object sender, RoutedEventArgs e)
{
MessageDialog SavingsAccCreation = new MessageDialog($"Account ID: {AccountLogic.AddSavingsAccount(customer)}", "Savings Account Created!");
await SavingsAccCreation.ShowAsync();
}
private void addSavings_Click(object sender, RoutedEventArgs e)
{
AccountLogic.AddSavingsAccount(customer);
}