private void dgvKorisnici_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            var item = dgvKorisnici.SelectedRows[0].DataBoundItem;
            frmKorisniciDetalji frm = new frmKorisniciDetalji(item as Korisnici);

            frm.ShowDialog();
        }
        private void noviKorisnikToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmKorisniciDetalji frm = new frmKorisniciDetalji();

            frm.Show();
        }
        private void btnDodaj_Click(object sender, EventArgs e)
        {
            frmKorisniciDetalji frm = new frmKorisniciDetalji();

            frm.ShowDialog();
        }