public void loadListAuto()
{
tbAverage.Clear();
tbExpensive.Clear();
tbEconomic.Clear();
foreach (Automobile automobile in lbAutomobiles.Items)
{
auto.Add(automobile);
}
float sumOfPotroshuvacka = 0;
if (auto != null)
{
Automobile najekonomicen = auto[0];
Automobile maxAuto = auto[0];
foreach (Automobile automobile in auto)
{
if (maxAuto.Cena < automobile.Cena)
{
maxAuto = automobile;
}
if (najekonomicen.Potroshuvacka > automobile.Potroshuvacka)
{
najekonomicen = automobile;
}
sumOfPotroshuvacka += (float)automobile.Potroshuvacka;
}
tbAverage.Text = string.Format("{0:#.0}", sumOfPotroshuvacka / lbAutomobiles.Items.Count);
tbExpensive.Text = maxAuto.ToString();
tbEconomic.Text = najekonomicen.ToString();
sumOfPotroshuvacka = 0;
}
}
private void calculateTotal()
{
if (lstCars.Items.Count > 0)
{/* mora da se proveri dali ima elementi vo listata, ako ne proveri programata kje padne
* i kje frli exception deka ne postojat elementi, so ovaa proverka toj problem se odbegnuva */
float avg = 0;
float sum = 0;
Automobile najekonomicen = lstCars.Items[0] as Automobile;
Automobile najskap = lstCars.Items[0] as Automobile;
foreach (object obj in lstCars.Items)
{
Automobile c = obj as Automobile;
sum += c.Spending;
if (najekonomicen.Spending > c.Spending)
{
najekonomicen = c;
}
if (najskap.Price < c.Price)
{
najskap = c;
}
}
avg = sum / lstCars.Items.Count;
tbProsecnaPotrosuvacka.Text = string.Format("{0:0.0} L", avg.ToString());
tbNajekonomicen.Text = najekonomicen.ToString();
tbNajskap.Text = najskap.ToString();
}
else
{//svojstvoto Text go vrakja vo default vrednost ako gorniot uslov ne e ispolnet
tbProsecnaPotrosuvacka.Text = null;
tbNajekonomicen.Text = null;
tbNajskap.Text = null;
}
}
private void btnAddAutomobile_Click(object sender, EventArgs e)
{
if (cbMarka.Text.Trim().Length == 0)
{
MessageBox.Show("Изберете марка", "Error", MessageBoxButtons.OK);
}
else if (tbModel.Text.Trim().Length == 0)
{
MessageBox.Show("Внесете модел", "Error", MessageBoxButtons.OK);
}
else
{
automobile = new Automobile(tbModel.Text.Trim(), (int)nudPotrosuvacka.Value, (int)nudCena.Value);
automobile.addMarka(cbMarka.SelectedItem as Marka);
lbAutomobiles.Items.Add(automobile);
loadListAuto();
tbModel.Clear();
nudPotrosuvacka.Value = 0;
nudPotrosuvacka.ResetText();
nudCena.Value = 0;
nudCena.ResetText();
cbMarka.Text = null;
cbMarka.ResetText();
}
}
private void btnAddCar_Click(object sender, EventArgs e)
{
if (cbBrands.SelectedIndex == -1)
{
MessageBox.Show("Изберете марка!", "Информација!", MessageBoxButtons.OK,
MessageBoxIcon.Information);
}
else if (string.IsNullOrWhiteSpace(tbModel.Text))
{
MessageBox.Show("Внесете модел!", "Информација!", MessageBoxButtons.OK,
MessageBoxIcon.Information);
}
else
{
Brand brand = cbBrands.SelectedItem as Brand;
Automobile m = new Automobile(brand, tbModel.Text, (float)numPotrosuvacka.Value, Convert.ToInt32(numPrice.Value));
lstCars.Items.Add(m);
calculateTotal();
tbModel.Text = null;
numPotrosuvacka.Value = 0;
numPrice.Value = 0;
cbBrands.SelectedIndex = -1;
}
}