//Remove UC element
void dsc_RemoveItem(object sender, EventArgs e)
{
DetailsSelectorSubelementControl scnd = (DetailsSelectorSubelementControl)sender;
ReturnedResults.Remove(scnd.ReturnResult);
stcScnd.Children.Remove(scnd);
}
//adding new UC element
private void btnAdd_Click(object sender, RoutedEventArgs e)
{
DetailsSelectorSubelementControl dsc = new DetailsSelectorSubelementControl();
stcScnd.Children.Add(dsc);
//ReturnedResults.Add(MainReturnedResult);
ReturnedResults.Add(dsc.ReturnResult);
dsc.RemoveItem += new EventHandler(dsc_RemoveItem);
}