private async void dgvKorisnici_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            var id = int.Parse(dgvKorisnici.SelectedRows[0].Cells[0].Value.ToString());

            var frm = new frmKorisniciDetalji(id);

            if (frm.ShowDialog() == DialogResult.OK)
            {
                await UcitajFormu();
            }
        }
        private void dodajKorisnikaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frm = new Korisnici.frmKorisniciDetalji();

            frm.Show();
        }