private void dgvVrstaClanka_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            var id = dgvVrstaClanka.SelectedRows[0].Cells[0].Value;
            frmVrstaClankaDetalji frm = new frmVrstaClankaDetalji(int.Parse(id.ToString()));

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

            frm.Show();
        }