private void btn_add_Click(object sender, EventArgs e) { var device = ((CboItemDto)cmb_device.SelectedItem).GetValue <Filter>(); var resolu = ((CboItemDto)cmb_resolution.SelectedItem).GetValue <Size>(); var codnom = txt_codnome.Text.Replace(' ', '_'); var videoCapture = new VideoCapture(device) { Size = resolu, CodNome = codnom }; _controller.NewDevice(videoCapture); EnableDeviceButtons(); }