private void btnDodadiAvtomobil_Click(object sender, EventArgs e)
{
if (cbMarki.SelectedIndex == -1)
{
string message = "Изберете марка!";
string caption = "Неуспешно додавање на автомобил";
MessageBox.Show(message, caption, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (txtModel.Text.Trim().Length == 0)
{
string message = "Внесете модел!";
string caption = "Неуспешно додавање на автомобил";
MessageBox.Show(message, caption, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Avtomobil avtomobil = new Avtomobil();
avtomobil.Marka = cbMarki.SelectedItem as Marka;
avtomobil.Model = txtModel.Text;
avtomobil.Cena = nupCena.Value;
avtomobil.Potrosuvacka = nupPotrosuvacka.Value;
lstAvtomobili.Items.Add(avtomobil);
ClearValues();
RefreshComputation();
}
private void RefreshComputation()
{
decimal averageConsumption = 0M;
decimal minConsumption = Decimal.MaxValue;
decimal maxPrice = Decimal.MinValue;
Avtomobil minCar = null;
Avtomobil maxCar = null;
foreach (Avtomobil item in lstAvtomobili.Items)
{
if (item.Cena > maxPrice)
{
maxPrice = item.Cena;
maxCar = item;
}
if (item.Potrosuvacka < minConsumption)
{
minConsumption = item.Potrosuvacka;
minCar = item;
}
averageConsumption += item.Potrosuvacka;
}
if ((minCar != null && maxCar != null) || averageConsumption != 0M)
{
txtNajskap.Text = maxCar.ToString();
txtNajekonomicen.Text = minCar.ToString();
txtProsecnaPotrosuvacka.Text = (averageConsumption / lstAvtomobili.Items.Count).ToString("0.0");
}
else
{
ClearComputed();
}
}