private void DeleteUnit_Click(object sender, RoutedEventArgs e)
{
Button button = sender as Button;
HostingUnit unit = (HostingUnit)button.DataContext;
bl.DisableHoustingUnit(unit.Key);
lstUnits = bl.GetHostingUnitsByHostId(unit.HostId).ToList();
lstUnits.RemoveAll(x => x.Status == ActivityStatus.INACTIVE);
this.UnitsViewList.ItemsSource = lstUnits;
this.UnitsViewList.Items.Refresh();
}