private void BtnChildHome_Click(object sender, RoutedEventArgs e)
        {
            DbOperations.SetChildGoneHome();

            fritidschildren = DbOperations.GetChildrenAtFritids();
            listViewTotalFritids.ItemsSource = fritidschildren;


            fritidsgonehome = DbOperations.GetChildrenGoneHome();
            listViewFritidsGonehome.ItemsSource = fritidsgonehome;
        }
        private void ListViewTotalFritids_Loaded(object sender, RoutedEventArgs e)
        {
            fritidschildren = DbOperations.GetChildrenAtFritids();

            foreach (var c in fritidschildren)
            {
                c.UpdateLeaveAlone();
            }

            listViewTotalFritids.ItemsSource = fritidschildren;
        }