private void btadd_Click(object sender, RoutedEventArgs e)
{
AddPayment wnd = new AddPayment();
wnd.ShowDialog();
UpdateWND();
}
private void btupd_Click(object sender, RoutedEventArgs e)
{
PaymentDto item = dataGridPayment.SelectedItem as PaymentDto;
if (item == null)
{
MessageBox.Show("Ничего не было выбрано для изменения ╮(￣ω￣)╭ ", "Какой коwмар!");
return;
}
AddPayment wnd = new AddPayment(item);
wnd.ShowDialog();
UpdateWND();
}