private void AgregarRentaButton_Click(object sender, RoutedEventArgs e)
        {
            RegistroRenta registroRenta = new RegistroRenta();

            registroRenta.Owner = this;
            registroRenta.Show();
        }
        private void RegistroRentaMenuItem_Click(object sender, RoutedEventArgs e)
        {
            RegistroRenta registro = new RegistroRenta();

            registro.Owner = this;
            registro.Show();
        }
        private void EditarButton_Click(object sender, RoutedEventArgs e)
        {
            Renta renta = (sender as Button).DataContext as Renta;

            RegistroRenta registroRenta = new RegistroRenta(renta.RentaId);

            registroRenta.Owner = this;
            registroRenta.Show();
        }
        private void registroDeRentaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            RegistroRenta r = new RegistroRenta();

            r.Show();
        }