/// <summary>
/// calculate the payment and other things
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Calculate_payment(object sender, RoutedEventArgs e)
{
try
{
contract = bl.CheckContract(contract, mother, nanny, bl.getChild(contract.id_child));
this.payment.Text = contract.payment.ToString();
name_childTextBox.Text = contract.name_child;
dateOfBirthing.Text = contract.dateOfBirth.ToLongDateString();
this.DataContext = contract;
}
catch (Exception ex) { MessageBox.Show(ex.Message); }
}