private void LvwMonthView_ItemSelectionChanged(object sender, ListViewItemSelectionChangedEventArgs e)
{
DataTable dispatches;
ListViewItem selectedItem = e.Item;
ListViewItem.ListViewSubItem subItem = selectedItem.SubItems[3];
string text = subItem.Text;
int year = Convert.ToInt32(text.Split('-').ElementAt(0));
int month = Convert.ToInt32(text.Split('-').ElementAt(1));
LvwDetailView.Items.Clear();
dispatches = selectedStaff.QueryLabourHourDetails(year, month, selectedStaff.ID, factory);
ShowDetailedList(dispatches);
}