private void Button_Click(object sender, RoutedEventArgs e) { CostumersTable selectedCostumer = (CostumersTable)CostumerSelectionComboBox.SelectedItem; orderDetailsTable selectedOrder = (orderDetailsTable)IdOrderSelectionComboBox.SelectedItem; CostumerOrderBL.UpdateBL(Convert.ToInt32(discount_txb.Text), Convert.ToInt32(amount_txb.Text), notes_txb.Text, Convert.ToInt32(active_txb.Text), productName_txb.Text, productType_txb.Text, typeOfTree_txb.Text, color_txb.Text, shoeing_txb.Text, Convert.ToInt32(cost_txb.Text), Convert.ToInt32(costPrice_txb.Text), selectedCostumer, selectedOrder); this.Close(); }