private void listBoxTarget_SelectedIndexChanged(object sender, EventArgs e) { BtnScript.Enabled = (listBoxTarget.SelectedItem as DisplayMember).Id == launcherController.Dolphin ? false : true; listBoxRom.DataSource = launcherController.GetRomsWithIdTarget((listBoxTarget.SelectedItem as DisplayMember).Id).Select(t => new DisplayMember { Id = t.Id, Description = t.ToString() }).ToList(); }