public ActionResult Index(int id)
{
if (id != DbUtil.Db.CurrentOrgId0)
throw new Exception($"Current org has changed from {id} to {DbUtil.Db.CurrentOrgId0}, aborting");
var model = new OrgDrop(id);
model.RemoveExistingLop(DbUtil.Db, id, OrgDrop.Op);
return View(model);
}