private void btnSaveCar_Click(object sender, EventArgs e)
{
Car car = CreateNewCar();
if (client.GetCarByRegNr(car.RegNumber = txtRegNr.Text) != null)
{
MessageBox.Show("Car with this registration number is already in database," +
"please try again!");
}
else
{
var theCarId = client.AddCar(car);
MessageBox.Show("Car saved");
txtRegNr.Text = string.Empty;
txtModel.Text = string.Empty;
txtManYear.Text = string.Empty;
txtBrand.Text = string.Empty;
}
}