// function to add items to listboxes
public static void SepeteUrunEkle(Benzin Benzin, ListBox listBox1, ListBox listBox2, ListBox listBox3)
{
// add product items to listbox if choosen products > 0
if (Benzin.Get_secilenadet() > 0)
{
listBox1.Items.Add(Benzin.Get_secilenadet());
listBox2.Items.Add(Benzin.Get_Name());
listBox3.Items.Add(Math.Round(Benzin.KdvUygula(Benzin.Get_Name()), 2));
}
}
private void button1_Click_1(object sender, EventArgs e)
{
// clear buttons in every click
Fatura.SepeteTemizle(listBox1, listBox2, listBox3);
// set choosen products
VPower.Set_secilenadet(Convert.ToInt32(n1.Value));
AGaz.Set_secilenadet(Convert.ToInt32(n2.Value));
kursunsuz.Set_secilenadet(Convert.ToInt32(n3.Value));
diesel.Set_secilenadet(Convert.ToInt32(n4.Value));
// add info to listboxes
Fatura.SepeteUrunEkle(VPower, listBox1, listBox2, listBox3);
Fatura.SepeteUrunEkle(diesel, listBox1, listBox2, listBox3);
Fatura.SepeteUrunEkle(AGaz, listBox1, listBox2, listBox3);
Fatura.SepeteUrunEkle(kursunsuz, listBox1, listBox2, listBox3);
// set new stokadedi
VPower.Set_LitreAdedi(Convert.ToInt32(VPower.Get_LitreAdedi()) - VPower.Get_secilenadet());
AGaz.Set_LitreAdedi(Convert.ToInt32(AGaz.Get_LitreAdedi()) - AGaz.Get_secilenadet());
kursunsuz.Set_LitreAdedi(Convert.ToInt32(kursunsuz.Get_LitreAdedi()) - kursunsuz.Get_secilenadet());
diesel.Set_LitreAdedi(Convert.ToInt32(diesel.Get_LitreAdedi()) - diesel.Get_secilenadet());
// set new stokadedi
l1.Text = Convert.ToString(VPower.Get_LitreAdedi());
l2.Text = Convert.ToString(AGaz.Get_LitreAdedi());
l3.Text = Convert.ToString(kursunsuz.Get_LitreAdedi());
l4.Text = Convert.ToString(diesel.Get_LitreAdedi());
// set numaricupdown Maximum and make sure the numaric updown number should not be bigger than stok adedi
n1.Maximum = VPower.Get_LitreAdedi();
n2.Maximum = AGaz.Get_LitreAdedi();
n3.Maximum = kursunsuz.Get_LitreAdedi();
n4.Maximum = diesel.Get_LitreAdedi();
// calculate the total price
double result = Math.Round((kursunsuz.KdvUygula(kursunsuz.Get_Name())) + (AGaz.KdvUygula(AGaz.Get_Name())) +
(diesel.KdvUygula(diesel.Get_Name())) + (VPower.KdvUygula(VPower.Get_Name())), 2);
if (result == 0)
{
l9.Text = result + "0 TL";
}
else
{
l9.Text = result + " TL";
}
}