private void refreshLists(int courseID)
{
crud crud = new crud();
List<child> subscribedChildren = (List<child>) Session["subscribedChildren"] ?? crud.getAllSubscriptionsForCourse(courseID).Select(x => x.child).ToList<child>();
List<child> childrenForUserProfile = new crud().getAllChildrenForUserProfile(Convert.ToInt32(Session["userID"]));
subscribedChildren = subscribedChildren.Where(sChild => childrenForUserProfile.Find(uChild => uChild.id == sChild.id) != null ? true : sChild.id > int.MaxValue - 10001 ? true : false).ToList<child>();
subscribedChildren.ForEach(sChild => childrenForUserProfile.Remove(childrenForUserProfile.Find(uChild => uChild.id == sChild.id)));
Session["subscribedChildren"] = subscribedChildren;
// fill select box (all children for user profile)
if (childrenForUserProfile.Count < 1) {
divExistingChildSelector.Visible = false;
divHasNoExistingChildren.Visible = true;
} else {
divExistingChildSelector.Visible = true;
divHasNoExistingChildren.Visible = false;
lstAllChildren.Items.Clear();
childrenForUserProfile.ForEach(uChild => lstAllChildren.Items.Add(new ListItem(uChild.firstName + " " + uChild.name, uChild.id.ToString())));
};
// fill list of children to subscribe
lstSubscribedChildren.DataSource = subscribedChildren;
lstSubscribedChildren.DataBind();
}