private void cbKlik_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            string[] izbira1 = { "Kingston 2, 5'' SSD disk 480 GB, SATA3", "DELL monitor LED UltraSharp U2412M", "Lenovo IdeaPad 110" };
            string[] izbira2 = { "PCX namizni računalnik Exam i5-7400/8GB/SSD120+1TB/Win10H", "Lenovo prenosnik V310", "Intel procesor Core i7-5820K" };
            string[] izbira3 = { "HP prenosnik Pavilion 17-ab004nm", "Intel procesor Core i7 6900K", "Gigabyte grafična kartica GTX 1080 OC" };
            string[] izbira4 = { "Asus prenosnik FX502VM-DM311T", "HP prenosnik Omen 17-w103nm", "DELL prenosnik Alienware 17" };

            ComboBox cmb = (ComboBox)sender;
            cmb.SelectionChanged += cbKlik_SelectionChanged;

            if (cbKlik.SelectedIndex == 1)
            {
                lvDataBinding.Items.Clear();
                foreach (string item in izbira1)
                {
                    lvDataBinding.Items.Add(new Artikel());
                }
            }
            if (cbKlik.SelectedIndex == 2)
            {
                lvDataBinding.Items.Clear();
                foreach (string item in izbira2)
                {
                    lvDataBinding.Items.Add(new Artikel());
                }
            }
            if (cbKlik.SelectedIndex == 3)
            {
                lvDataBinding.Items.Clear();
                foreach (string item in izbira3)
                {
                    lvDataBinding.Items.Add(new Artikel());
                }
            }
            if (cbKlik.SelectedIndex == 4)
            {
                lvDataBinding.Items.Clear();
                foreach (string item in izbira4)
                {
                    lvDataBinding.Items.Add(new Artikel());
                }
            }
        }