private void btnPregled_Click(object sender, EventArgs e)
        {
            if (Validation())
            {
                FillViewModels();
                parOstaleNapomene = txtOstaleNapomene.Text;
                var report = new frmReportPregled("MultisetOrder.Reports.rptNarudzbaEng.rdlc", datasource, parOstaleNapomene, "ENG");
                report.ShowDialog();
            }
            else
            {

            }
        }