private void OkButtonForEdit_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { decimal price = 0; decimal worth = 0; if (decimal.TryParse(PriceBox.Text, out price) && decimal.TryParse(WorthBox.Text, out worth) == true) { CarRentalDbWorker.EditCar(_connection, _oldGovNum, GovNumBox.Text, ColorBox.Text, price, worth); DialogResult = true; Close(); } else { MessageBox.Show("Неверно введены данные"); } }