/// <summary>
/// Method subscribe to event handler which re-populate list view items
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnUpdateInvoiceSent(object sender, InvoiceEventInfo e)
{
Invoice updateInvoice = e.UpdateInvoice;
addInvoiceToLibrary.ChangeElementAtPosition(updateInvoice, lstInvoices.SelectedIndex);
UpdateListViewInvoices();
}
/// <summary>
/// Publisher event handler method to invoice updated variables
/// </summary>
/// <param name="e"></param>
public void OnUpdateInvoice(InvoiceEventInfo e)
{
if (UpdateInvoice != null)
{
UpdateInvoice(this, e); // call event handler
}
}
/// <summary>
/// Method to calculate discount and new total invoice price
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnDiscount_Click(object sender, RoutedEventArgs e)
{
if (ValidateInput())
{
documentInvoice.Discount = Convert.ToDecimal(txtDiscount.Text);
lblTotal.Content = documentInvoice.TotalInvoice().ToString("F");
UpdateGUI();
InvoiceEventInfo updateTotal = new InvoiceEventInfo(documentInvoice);
OnUpdateInvoice(updateTotal);
}
}
/// <summary>
/// Method to handle changes by the user in the Due date data timepicker
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void daPDueDate_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
{
bool proceed = documentInvoice.ValidateDueDate(daPDueDate.SelectedDate.Value);
if (proceed)
{
documentInvoice.DueDate = daPDueDate.SelectedDate.Value;
InvoiceEventInfo updateTotal = new InvoiceEventInfo(documentInvoice);
OnUpdateInvoice(updateTotal);
daPDueDate.BorderBrush = Brushes.White;
lblErrorDueDate.Content = string.Empty;
}
else
{
lblErrorDueDate.Foreground = Brushes.Red;
lblErrorDueDate.Content = "Error! Due Date < Created Date";
daPDueDate.BorderBrush = Brushes.Red;
}
}